Backup Q1 2020 Deutsche Telekom Q1 2020

X BACKUP Q1 2020 DEUTSCHE TELEKOM Q1 2020

Check out our IR website www.telekom.com/investor-relations for:

▪ This backup in .pdf and excel-format ▪ The IR calender ▪ Detailed information for debt investors ▪ Shareholder structure ▪ Corporate governance

For further information on the business units please refer to:

www.telekom.com www.telekom.de www.t-mobile.com www.t-systems.com

Investor Relations, Bonn office Phone +49 228 181 - 8 88 80 Fax +49 228 181 - 8 88 99 E-Mail [email protected]

The mandatory first-time application of the new IFRS 16 "Leases" accounting standarfd as of January 1, 2019 has a material impact on Deutsche Telekom´s consolidated financial statements. The new standard requires payment obligations from existing operating leases to be discounted and recignized as lease liabilities; as financial liabilities, they increase net debt. At the same time the lessee capitalizes a right of use. Operating expenses previously recognized either in depreciation charges for capitalized right-of-use-assets or in interest expenses for discounted obligations from operating leases, as appropriate. This will significantly increase EBITDA without any attendant change in the economic circumstances. In the statement of cash flows, the repayment portion of the lease payments from existing operating leases will reduce net cash from/used in financing activities and no longer affect net cash from operating activities. Interest payments will remain in net cash from operating activities and thus also in free cash flow.

With the beginning of January 1, 2018, Deutsche Telekom Group applies IFRS 15 “Revenue from Contracts with Customers”. Application of the standard is mandatory for reporting periods beginning on or after January 1, 2018. This standard provides a single, principles-based five-step model for the determination and recognition of revenue to be applied to all contracts with customers. It replaces in particular IAS 18 “Revenue” and IAS 11 “Construction Contracts” and has a material effect on the presentation of Deutsche Telekom’s results of operations and financial position. Deutsche Telekom utilizes the option for simplified initial application, i.e., contracts that are not completed by January 1, 2018 have been accounted for as if they had been recognized in accordance with IFRS 15 from the very beginning. The cumulative effect arising from the transition has been recognized as an adjustment to the opening balance of equity in the year of initial application. Prior-year comparatives have not been adjusted; instead, Deutsche Telekom has provided an explanation of the reasons for the changes in items in the statement of financial position and the income statement for the current period as a result of applying IFRS 15 for the first time.

Since January 1, 2018, Deutsche Telekom Group applies IFRS 9 „Financial Instruments.“ Application of the standard is mandatory for reporting periods beginning on or after January 1, 2018. The standard introduces new classification and •measurement requirements for financial instruments and replaces IAS 39. Deutsche Telekom utilizes the option for simplified initial application. The cumulative effect arising from the transition has been recognized as an adjustment to the opening balance of equity in the year of initial application. Prior-year comparatives have not been adjusted; instead, Deutsche Telekom has provided an explanation of the reasons for the changes in items in the statement of financial position and the income statement for the current period as a result of applying IFRS 9 for the first time.

The figures shown in this report were rounded in accordance with standard business rounding principles. As a result, the total indicated may not be equal to the precise sum of the individual figures.

DT IR BackUp Q1/20 1 / 73 X CONTENT DT

GERMANY SYSTEMS SOLUTIONS At a Glance 3 Financials 27 Financials 63 Excellent market position 5 EBITDA reconciliation 28 EBITDA reconciliation 64 Operationals & Mobile Communication KPIs 29 DT GROUP Additional information 30 GROUP DEVELOPMENT Adjusted for special factors 7 Financials 66 As reported 8 UNITED STATES EBITDA reconciliation 67 EBITDA reconciliation 9 Financials 40 Netherlands 68 Special factors in the consolidated income statement 10 EBITDA reconciliation 41 Details on special factors I & II 11 - 12 Operationals 42 - 43 GHS Change in the composition of the group 13 Financials 71 Consolidated statement of financial position 14 - 15 EUROPE EBITDA reconciliation 72 Provisions for pensions 16 Financials 45 Maturity profile 17 EBITDA reconciliation 46 GLOSSARY 73 Liquidity reserves 18 Greece 47 DT/TMUS Funding 19 Romania 49 Net debt 20 Hungary 51 Net debt development 21 Poland 53 Cash capex 22 Czech Republic 55 Free cash flow 23 Croatia 57 Personnel 24 Slovakia 59 Exchange rates 25 Austria 61

DT IR BackUp Q1/20 2 / 73 X DT GROUP AT A GLANCE

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % REVENUE Germany 5.357 5.388 5.472 5.669 21.886 5.405 0,9 United States 9.796 9.826 10.006 10.791 40.420 10.157 3,7 Europe 1 2.891 2.978 3.074 3.225 12.168 2.903 0,4 Systems Solutions 1.630 1.673 1.657 1.845 6.805 1.628 (0,1) Group Development 682 683 704 729 2.797 708 3,8 Group Headquarters & Group Services 651 678 633 658 2.620 632 (2,9) Reconciliation (1.520) (1.561) (1.529) (1.555) (6.166) (1.491) 1,9 DT GROUP 19.488 19.664 20.017 21.361 80.531 19.943 2,3

NET REVENUE Germany 5.036 5.059 5.141 5.336 20.572 5.092 1,1 United States 9.796 9.826 10.005 10.791 40.418 10.157 3,7 Europe 1 2.808 2.891 2.982 3.127 11.808 2.816 0,3 Systems Solutions 1.278 1.321 1.299 1.482 5.380 1.290 0,9 Group Development 522 520 540 576 2.158 539 3,3 Group Headquarters & Group Services 48 48 49 50 195 49 2,1 DT GROUP 19.488 19.664 20.017 21.361 80.531 19.943 2,3

EBITDA (ADJUSTED FOR SPECIAL FACTORS) Germany 2.114 2.161 2.260 2.209 8.744 2.170 2,6 United States 3.309 3.534 3.563 3.403 13.809 3.867 16,9 Europe 1 1.059 1.099 1.196 1.105 4.460 1.073 1,3 Systems Solutions 125 158 175 186 645 133 6,4 Group Development 332 319 345 335 1.330 340 2,4 Group Headquarters & Group Services (35) 20 (45) (190) (250) (12) 65,7 Reconciliation (2) (29) (4) 7 (29) (8) n.a. DT GROUP 6.901 7.263 7.490 7.054 28.708 7.563 9,6 Proportional EBITDA 5.341 5.609 5.769 5.416 22.135 5.779 8,2

EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) Germany 2.108 2.153 2.254 2.205 8.720 2.164 2,7 United States 2.679 2.872 2.874 2.710 11.134 3.160 18,0 Europe 1 945 991 1.086 982 4.005 963 1,9 Systems Solutions 92 127 144 156 519 100 8,7 Group Development 255 250 269 259 1.033 269 5,5 Group Headquarters & Group Services (137) (82) (143) (289) (651) (104) 24,1 Reconciliation (2) (29) (4) 7 (29) (8) n.a. DT GROUP 5.940 6.283 6.478 6.030 24.731 6.544 10,2 Proportional EBITDA AL 4.647 4.847 5.047 4.692 19.233 5.058 8,8

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 3 / 73 DT GROUP AT A GLANCE II

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EBITDA AL MARGIN (ADJUSTED FOR SPECIAL % FACTORS) (EBITDA AL / TOTAL REVENUE) Germany 39,4 40,0 41,2 38,9 39,8 40,0 0,6p United States 27,3 29,2 28,7 25,1 27,5 31,1 3,8p Europe 1 32,7 33,3 35,3 30,4 32,9 33,2 0,5p Systems Solutions 5,6 7,6 8,7 8,5 7,6 6,1 0,5p Group Development 37,4 36,6 38,2 35,5 36,9 38,0 0,6p Group Headquarters & Group Services (21,0) (12,1) (22,6) (43,9) (24,8) (16,5) 4,5p DT GROUP 30,5 32,0 32,4 28,2 30,7 32,8 2,3p

CASH CAPEX Germany 1.216 1.069 1.066 999 4.349 1.036 (14,8) United States 1.713 2.272 1.329 1.055 6.369 1.708 (0,3) Europe 1 446 469 386 522 1.824 438 (1,8) Systems Solutions 93 73 66 151 384 35 (62,4) Group Development 86 106 99 161 452 119 38,4 Group Headquarters & Group Services 274 231 234 288 1.028 233 (15,0) Reconciliation (1) (20) (1) (26) (48) 0 (100,0) DT GROUP 2 3.827 4.199 3.180 3.150 14.357 3.570 (6,7) - thereof spectrum investment 145 875 143 75 1.239 217 49,7

NET PROFIT (LOSS) adjusted for special factors 1.183 1.329 1.420 1.016 4.948 1.284 8,5 as reported 900 944 1.368 654 3.867 916 1,8 FREE CASH FLOW (BEFORE DIVIDEND PAYMENTS AND SPECTRUM INVESTMENT) 2.370 2.312 2.913 2.537 10.133 2.294 (3,2) Proportional free cash flow 1.884 804 2.161 1.692 6.542 1.702 (9,7) FREE CASH FLOW AL (BEFORE DIVIDEND 3 PAYMENTS AND SPECTRUM INVESTMENT) 1.557 1.546 2.147 1.763 7.013 1.287 (17,3) Proportional free cash flow AL 1.268 243 1.606 1.133 4.249 978 (22,9) NET DEBT 71.876 75.709 78.807 76.031 76.031 77.394 7,7 NET DEBT w/o Leases 54.946 58.364 60.742 58.248 58.248 59.698 8,6

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted. 2 Amounts of payouts for property, plant and equipment and intangible assets excluding goodwill. 3 Without the interest payments for zero coupon bonds. DT IR BackUp Q1/20 4 / 73 DT GROUP EXCELLENT MARKET POSITION1

Q1 Q2 Q3 Q4 Q1 Change compared to Change compared to Note 2019 2019 2019 2019 2020 prior quarter prior year ('000) ('000) ('000) ('000) ('000) abs. % abs. % BROADBAND CUSTOMERS RETAIL(END OF PERIOD) 2,7 20.643 20.754 20.868 21.021 21.166 145 0,7 523 2,5 Germany 13.608 13.636 13.683 13.730 13.813 83 0,6 205 1,5 Europe 7 6.478 6.540 6.599 6.672 6.737 65 1,0 259 4,0 Greece 3 1.938 1.972 1.993 2.033 2.065 32 1,6 127 6,6 Romania 1.078 1.055 1.040 1.014 978 (36) (3,6) (100) (9,3) Hungary 1.170 1.189 1.209 1.231 1.256 25 2,0 86 7,4 Poland 11 10 11 18 18 0 0,0 7 63,6 Czech Republic 7 274 290 305 320 350 30 9,4 76 27,7 Croatia 617 619 622 621 620 (1) (0,2) 3 0,5 Slovakia 550 557 565 576 583 7 1,2 33 6,0 Austria 601 606 609 612 617 5 0,8 16 2,7 other 239 241 245 249 250 1 0,4 11 4,6 Group Development 6 540 562 586 605 616 11 1,8 76 14,1 Netherlands 6 540 562 586 605 616 11 1,8 76 14,1 FIXED NETWORK LINES (END OF PERIOD) 28.022 27.863 27.666 27.548 27.439 (109) (0,4) (583) (2,1) Germany 18.414 18.228 17.996 17.824 17.711 (113) (0,6) (703) (3,8) Europe 9.051 9.057 9.069 9.105 9.096 (9) (0,1) 45 0,5 Greece 2.581 2.607 2.625 2.638 2.637 (1) 0,0 56 2,2 Romania 1.697 1.648 1.608 1.560 1.504 (56) (3,6) (193) (11,4) Hungary 1.673 1.680 1.690 1.703 1.718 15 0,9 45 2,7 Poland 18 19 19 18 26 8 44,4 8 44,4 Czech Republic 430 454 477 533 568 35 6,6 138 32,1 Croatia 922 916 914 908 897 (11) (1,2) (25) (2,7) Slovakia 854 854 855 860 859 (1) (0,1) 5 0,6 Austria 544 546 548 549 553 4 0,7 9 1,7 other 334 332 334 335 334 (1) (0,3) 0 0,0 Group Development 557 578 601 619 632 13 2,1 75 13,5 Netherlands 557 578 601 619 632 13 2,1 75 13,5 MOBILE SUBSCRIBERS (END OF PERIOD) 5 179.140 179.803 181.813 184.009 185.516 1.507 0,8 6.376 3,6 Germany 44.657 44.827 45.598 46.189 46.960 771 1,7 2.303 5,2 United States 5 64.744 65.983 66.503 67.895 68.543 648 1,0 3.799 5,9 Europe 47.800 46.469 46.501 46.165 45.916 (249) (0,5) (1.884) (3,9) Greece 3 7.682 7.605 7.505 7.365 7.311 (54) (0,7) (371) (4,8) Romania 5.421 5.258 5.051 4.916 4.777 (139) (2,8) (644) (11,9) Hungary 5.305 5.332 5.323 5.369 5.378 9 0,2 73 1,4 Poland 10.823 10.869 10.908 10.954 10.982 28 0,3 159 1,5 Czech Republic 6.186 6.224 6.282 6.265 6.267 2 0,0 81 1,3 Croatia 2.262 2.286 2.359 2.274 2.248 (26) (1,1) (14) (0,6) Slovakia 2.391 2.402 2.432 2.428 2.409 (19) (0,8) 18 0,8 Austria 4.765 4.938 5.024 5.019 4.998 (21) (0,4) 233 4,9 other 4 2.967 1.555 1.617 1.576 1.545 (31) (2,0) (1.422) (47,9) Group Development 5.382 5.455 5.528 5.610 5.686 76 1,4 304 5,6 Netherlands 5.382 5.455 5.528 5.610 5.686 76 1,4 304 5,6

1. Figures rounded to the nearest million. The total is calculated on the basis of precise numbers. Percentages calculated on the basis of figures shown. 2. Broadband lines in operation excluding lines for internal use and public telecommunications; including IP-based access lines. Including BB via cable in Hungary. 3. As of Q1/19 17k Hybrid customers have been reclassified from Mobile to Broadband Customers. Figures of previous periods were not adjusted. 4. Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted. 5. From Q1 2020, TMUS discontinues reporting of wholesale customers and instead focuses on branded customers and wholesale revenues, which are considered more relevant than the number of wholesale customers given the expansion of M2M and Internet of Things (“IoT”) products. 6.As of January 1, 2020, harmonization of the definition for broadband customers. Figures of previous periods were adjusted. 7. As of Q1/20: Includes 15k subscibers acquired in the Czech Republic from an internet service provider.

DT IR BackUp Q1/20 5 / 73 X CONTENT DT

DT IR BackUp Q1/20 6 / 73 X DT CONSOLIDATED INCOME STATEMENT1 ADJUSTED FOR SPECIAL FACTORS

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % NET REVENUE 19.488 19.664 20.017 21.361 80.531 19.943 2,3 Other operating income 204 188 216 264 872 293 43,6 Changes in inventories 32 23 24 (50) 29 27 (15,6) Own capitalized costs 590 589 600 640 2.419 605 2,5 Goods and services purchased (8.754) (8.568) (8.797) (10.303) (36.422) (8.429) 3,7 Personnel costs (3.978) (3.919) (3.853) (3.936) (15.686) (4.037) (1,5) Other operating expenses (680) (714) (717) (923) (3.034) (839) (23,4) Depreciation, amortization, and impairment losses (4.204) (4.301) (4.256) (4.532) (17.293) (4.429) (5,4) PROFIT (LOSS) FROM OPERATIONS (EBIT) 2.698 2.962 3.234 2.522 11.416 3.134 16,2 EBIT margin (EBIT / net revenue) % 13,8 15,1 16,2 11,8 14,2 15,7 1,9p Profit (loss) from financial activities (406) (465) (616) (706) (2.192) (944) n.a. of which: finance costs (603) (590) (592) (577) (2.362) (537) 10,9 PROFIT (LOSS) BEFORE INCOME TAXES (EBT) 2.292 2.497 2.618 1.817 9.223 2.190 (4,5) Income taxes (649) (684) (703) (418) (2.454) (619) 4,6 PROFIT (LOSS) 1.643 1.813 1.915 1.399 6.770 1.571 (4,4) Profit (loss) attributable to non-controlling interests 460 484 496 382 1.822 287 (37,6) NET PROFIT (LOSS) 1.183 1.329 1.420 1.016 4.948 1.284 8,5

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 7 / 73 X DT CONSOLIDATED INCOME STATEMENT1 AS REPORTED

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % NET REVENUE 19.488 19.664 20.017 21.361 80.531 19.943 2,3 Other operating income 204 254 389 275 1.121 293 43,6 Changes in inventories 32 23 24 (50) 29 27 (15,6) Own capitalized costs 590 589 600 639 2.418 605 2,5 Goods and services purchased (8.842) (8.781) (8.916) (10.416) (36.956) (8.565) 3,1 Personnel costs (4.301) (4.262) (4.013) (4.148) (16.723) (4.483) (4,2) Other operating expenses (709) (786) (787) (1.019) (3.301) (880) (24,1) Depreciation, amortization, and impairment losses (4.204) (4.351) (4.256) (4.852) (17.663) (4.429) (5,4) PROFIT (LOSS) FROM OPERATIONS (EBIT) 2.258 2.350 3.058 1.792 9.457 2.511 11,2 EBIT margin (EBIT / net revenue) % 11,6 12,0 15,3 8,4 11,7 12,6 1,0p Profit (loss) from financial activities (406) (466) (615) (709) (2.197) (965) n.a. of which: finance costs (603) (590) (591) (580) (2.364) (557) 7,6 PROFIT (LOSS) BEFORE INCOME TAXES (EBT) 1.852 1.883 2.442 1.083 7.260 1.546 (16,5) Income taxes (527) (511) (623) (331) (1.993) (451) 14,4 PROFIT (LOSS) 1.325 1.372 1.819 752 5.268 1.095 (17,4) Profit (loss) attributable to non-controlling interests 425 428 451 98 1.401 179 (57,9) NET PROFIT (LOSS) 900 944 1.368 654 3.867 916 1,8

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 8 / 73 X DT Group1 EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % NET PROFIT (LOSS) 900 944 1.368 654 3.867 916 1,8 + Profit (loss) attributable to non-controlling interests 425 428 451 98 1.401 179 (57,9) = Profit (loss) 1.325 1.372 1.819 752 5.268 1.095 (17,4) - Income taxes (527) (511) (623) (331) (1.993) (451) 14,4 = Profit (loss) before income taxes = EBT 1.852 1.883 2.442 1.083 7.260 1.546 (16,5) - Profit (loss) from financial activities (406) (466) (615) (709) (2.197) (965) n.a. PROFIT (LOSS) FROM OPERATIONS (EBIT) 2.258 2.350 3.058 1.792 9.457 2.511 11,2 - Depreciation, amortization and impairment losses (4.204) (4.351) (4.256) (4.852) (17.663) (4.429) (5,4) = EBITDA 6.461 6.701 7.314 6.643 27.120 6.940 7,4 - Special factors affecting EBITDA (440) (562) (176) (411) (1.589) (623) (41,6) = EBITDA ADJUSTED FOR SPECIAL FACTORS 6.901 7.263 7.490 7.054 28.708 7.563 9,6 = EBITDA AL ADJUSTED FOR SPECIAL FACTORS 5.940 6.283 6.478 6.030 24.731 6.544 10,2

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 9 / 73 X DT Group1 SPECIAL FACTORS IN THE CONSOLIDATED INCOME STATEMENT

Q1 Q2 Q3 Q4 FY Q1 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € NET REVENUE 0 0 0 0 0 0 Other operating income 0 65 173 12 250 0 Changes in inventories 0 0 0 0 0 0 Own capitalized costs 0 0 0 (1) 0 0 Goods and services purchased (88) (213) (119) (114) (534) (136) Personnel costs (323) (343) (160) (212) (1.037) (447) Other operating expenses (29) (71) (70) (96) (266) (40) Depreciation, amortization, and impairment losses 0 (50) 0 (320) (370) 0 PROFIT (LOSS) FROM OPERATIONS (EBIT) (440) (612) (176) (730) (1.959) (623) Profit (loss) from financial activities 0 (1) 0 (3) (4) (21) PROFIT (LOSS) BEFORE INCOME TAXES (EBT) (440) (613) (176) (734) (1.963) (643) Income taxes 122 173 79 87 461 154 PROFIT (LOSS) (318) (441) (97) (647) (1.502) (489) Profit (loss) attributable to non-controlling interests 36 56 45 285 421 108 NET PROFIT (LOSS) (282) (385) (52) (362) (1.081) (368)

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 10 / 73 X DT Group1 DETAILS ON SPECIAL FACTORS I

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECT ON OPERATING EXPENSES (440) (627) (349) (422) (1.838) (623) (41,6) of which: expenses / income for early retirement (civil servants) (172) (119) (6) 5 (292) (171) 0,6 of which: expenses for severance payments (54) (119) (57) (96) (326) (87) (61,1) of which: expenses / income for partial retirement (62) (62) (64) (81) (270) (76) (22,6) of which: expenses for other personnel restructuring charges (1) (3) (3) (14) (21) (8) n.a. of which: Vivento transfer payments (1) (1) (1) (1) (4) 0 (100,0) of which: restructuring charges (19) (30) (11) (22) (81) (8) 57,9 of which: expenses due to de-consolidations and other asset sales (111) (239) (172) (159) (681) (145) (30,6) of which: others (20) (54) (34) (55) (163) (128) n.a. EFFECT ON OTHER OPERATING INCOME 0 65 173 12 250 0 n.a. of which: income due to asset sales 0 65 142 12 219 0 n.a. of which: others 0 0 31 0 31 0 n.a. EFFECT ON REVENUE 0 0 0 0 0 0 n.a. EFFECT ON EBITDA (440) (562) (176) (411) (1.589) (623) (41,6) DEPRECIATION, AMORTIZATION AND IMPAIRMENT LOSSES 0 (50) 0 (320) (370) 0 n.a. EFFECT ON PROFIT FROM OPERATIONS = EBIT (440) (612) (176) (730) (1.959) (623) (41,6)

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 11 / 73 X DT Group1 DETAILS ON SPECIAL FACTORS II

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECT ON PROFIT (LOSS) FROM FINANCIAL ACTIVITIES 0 (1) 0 (3) (4) (21) n.a. EFFECT ON PROFIT (LOSS) BEFORE INCOME TAXES (440) (613) (176) (734) (1.963) (643) (46,1) EFFECT ON TAXES 122 173 79 87 461 167 36,9 EFFECT ON PROFIT (LOSS) ATTRIBUTABLE TO NON- CONTROLLING INTERESTS 36 56 45 285 421 (108) n.a. EFFECT ON NET PROFIT (LOSS) (282) (385) (52) (362) (1.081) (368) (30,5)

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 X CHANGE IN THE COMPOSITION OF THE GROUP IN THE CURRENT QUARTER

ADJUSTED PLUS PLUS TOTAL PRO ADJUSTED ORGANIC NUMBERSQ1 CONSOLIDATION AND OTHER EFFECTS FOREIGN EXCHANGE EFFECTS EFFECT FORMAQ1 NUMBERSQ1 CHANGE 2019 Total Germany United States Europe Group Systems GHS Reconciliatio Total Germany United States Europe Group Systems GHS Reconciliaito 2019 2020 Change millions of millions of Development Solutions n millions of Development Solutions n milions of millions of millions of Note € € millions of € millions of € millions of € millions of € millions of € millions of € millions of € € millions of € millions of € millions of € millions of € millions of € millions of € € € € % NET REVENUE 19.488 (14) (14) 259 293 (31) (3) 245 19.733 19.943 1,1 EBITDA AL ADJUSTED FOR SPECIAL FACTORS 5.940 (6) (5) (1) 72 80 (9) 1 66 6.006 6.544 9,0

DT IR BackUp Q1/20 13 / 73 X CONSOLIDATED STATEMENT OF FINANCIAL POSITION1 ASSETS

Mar. 31 Jun. 30 Sep. 30 Dec. 31 Mar. 31 Change Change compared to compared to 2019 2019 2019 2019 2020 prior quarter prior year Note millions of € millions of € millions of € millions of € millions of € % % CURRENT ASSETS 24.693 21.801 24.563 24.689 24.420 (1,1) (1,1) Cash and cash equivalents 6.144 3.894 6.461 5.393 4.076 (24,4) (33,7) Trade and other receivables 9.990 9.898 9.919 10.846 10.560 (2,6) 5,7 Contract assets 1.841 1.894 1.882 1.876 1.837 (2,1) (0,2) Current recoverable income taxes 556 511 446 481 455 (5,4) (18,2) Other financial assets 2.277 2.187 2.614 3.254 3.748 15,2 64,6 Inventories 2.015 1.702 1.598 1.568 1.893 20,7 (6,1) Current and non-current assets and disposal groups held for sale 145 94 177 97 84 (13,4) (42,1) Other assets 1.726 1.621 1.465 1.175 1.765 50,2 2,3 NON-CURRENT ASSETS 140.779 142.413 149.764 145.983 149.226 2,2 6,0 Intangible assets 66.387 66.266 69.645 68.202 69.000 1,2 3,9 Property, plant and equipment 48.766 49.119 49.982 49.548 49.544 0,0 1,6 Right of Use assets 16.828 17.549 18.474 17.998 18.134 0,8 7,8 Contract costs 1.833 1.873 1.988 2.075 2.072 (0,1) 13,0 Investments accounted for using the equity method 614 675 397 489 518 5,9 (15,6) Other financial assets 2.147 2.731 4.656 3.996 5.714 43,0 n.a. Deferred tax assets 3.169 3.163 3.529 2.704 3.276 21,2 3,4 Other assets 1.035 1.036 1.092 970 969 (0,1) (6,4) TOTAL ASSETS 165.472 164.214 174.327 170.672 173.646 1,7 4,9

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 14 / 73 X CONSOLIDATED STATEMENT OF FINANCIAL POSITION1 LIABILITIES AND SHAREHOLDERS' EQUITY

Mar. 31 Jun. 30 Sep. 30 Dec. 31 Mar. 31 Change Change compared to compared to 2019 2019 2019 2019 2020 prior quarter prior year Note millions of € millions of € millions of € millions of € millions of € % % LIABILITIES 122.710 121.524 129.190 124.441 127.768 2,7 4,1 CURRENT LIABILITIES 37.365 35.063 35.249 32.913 32.877 (0,1) (12,0) Financial liabilities 14.958 13.582 14.148 11.463 11.821 3,1 (21,0) Lease liabilities 4.054 4.019 4.146 3.987 3.988 0,0 (1,6) Trade and other payables 10.241 9.647 8.896 9.431 8.730 (7,4) (14,8) Income tax liabilities 368 359 387 463 443 (4,3) 20,4 Other provisions 2.995 2.580 2.697 3.082 2.983 (3,2) (0,4) Liabilities directly associated with non-current assets and disposal groups held for sale 30 0 0 29 29 0,0 (3,3) Other liabilities 3.013 3.177 3.299 2.850 3.230 13,3 7,2 Contract Liabilities 1.703 1.700 1.676 1.608 1.654 2,9 (2,9) NON-CURRENT LIABILITIES 85.345 86.461 93.941 91.528 94.891 3,7 11,2 Financial liabilities 50.988 50.605 55.510 54.886 56.622 3,2 11,0 Lease liabilities 14.673 15.328 16.167 15.848 15.710 (0,9) 7,1 Provisions for pensions and other employee benefits 5.750 6.569 6.702 5.831 6.835 17,2 18,9 Other provisions 3.201 3.319 3.489 3.581 3.582 0,0 11,9 Deferred tax liabilities 8.996 8.935 9.683 8.954 9.780 9,2 8,7 Other liabilities 1.233 1.173 1.894 1.972 1.944 (1,4) 57,7 Contract Liabilities 504 532 496 456 417 (8,6) (17,3) SHAREHOLDERS' EQUITY 42.762 42.690 45.137 46.231 45.878 (0,8) 7,3 Issued capital 12.189 12.189 12.189 12.189 12.189 0,0 0,0 Capital reserves 54.894 54.919 54.992 55.029 55.012 0,0 0,2 Retained earnings incl. carryforwards (38.518) (39.131) (39.520) (38.709) (35.941) (7,2) (6,7) Total other comprehensive income (416) (886) (351) (622) (1.023) 64,5 n.a Net profit (loss) 900 1.845 3.213 3.867 916 (76,3) 1,8 Treasury shares (48) (48) (47) (47) (47) 0,0 (2,1) Non-controlling interests 13.761 13.802 14.662 14.524 14.771 1,7 7,3 TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY 165.472 164.214 174.327 170.672 173.646 1,7 4,9

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 15 / 73 DT GROUP PROVISIONS FOR PENSIONS 2019 2018 2017 2016 2015 millions of € millions of € millions of € millions of € millions of € FROM DEFINED BENEFIT OBLIGATION TO PROVISION IN BALANCE SHEET Present value of obligation (DBO) 1 12.290 11.590 11.462 11.427 10.753 Plan assets 2 (6.489) (6.099) (3.102) (2.990) (2.744) Others 30 11 15 14 19 Provision in balance sheet 5.831 5.502 8.375 8.451 8.028

PENSION COSTS INCLUDED IN P&L (INCLUDED EXPECTED RETURN ON PLAN ASSETS) 332 313 402 396 442 thereof included in EBITDA 245 217 266 230 285 thereof included in financial result 87 96 136 166 157

CASH PAYMENTS FOR PENSIONS 1) funding of plan assets by DT (investment in financial assets) 11 (214) 10 264 276 2) benefits actually paid from plan assets 241 132 31 32 31 3) benefits paid directly by the employer (included in cash flow from 155 343 378 375 386 operations) cash payments included in cash flow statement = 1) + 3) 166 129 388 639 662 cash payments included in free cash flow = 3) 155 343 378 375 386

CHANGE IN THE PRESENT VALUE OF THE OBLIGATION Defined Benefit Obligation as of January 1 11.590 11.462 11.427 pension costs included in P&L 431 401 450 benefits paid (397) (343) (378) actuarial losses/gains 3 656 51 (11) F/X 18 6 (29) Others (8) 13 3 Defined Benefit Obligation as of December 31 12.290 11.590 11.462

1 Increase in obligation mainly due to a change in the discount rates. 2 Increase mainly from contribution of DT owned shares in Ströer SE & Co. KGaA to plan assets. 3 Actuarial losses/gains are via other comprehensive income directly billed vs. equity.

DT IR BackUp Q1/20 16 / 73 well-balanced maturity Profile as of MARCH 31, 2020

DT IR BackUp Q1/20 17 / 73 Strong liquidity Profile as of MARCH 31, 2020

DT IR BackUp Q1/20 18 / 73 DT/TMUS FUNDING - CREDIT POSITIVE FOR DT

DT IR BackUp Q1/20 19 / 73 DT Group1 NET DEBT

Mar. 31, Jun. 30, Sep. 30, Dec. 31, Mar. 31, Change Change compared to compared to 2019 2019 2019 2019 2020 prior quarter prior year Note millions of € millions of € millions of € millions of € millions of € % % Bonds 51.835 51.997 54.719 51.644 53.230 3,1 2,7 Other financial liabilities 28.084 31.537 33.746 33.053 33.579 1,6 19,6 GROSS DEBT 79.919 83.534 88.465 84.697 86.809 2,5 8,6 Cash and cash equivalents 6.144 3.894 6.461 5.393 4.078 (24,4) (33,6) Other financial assets 1.899 3.931 3.197 3.273 5.337 63,1 n.a. NET DEBT 71.876 75.709 78.807 76.031 77.394 1,8 7,7 NET DEBT w/o Leases 54.946 58.364 60.742 58.248 59.698 2,5 8,6

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted.

DT IR BackUp Q1/20 20 / 73 NET DEBT DEVELOPMENT Q1 2020

DT IR BackUp Q1/20 21 / 73 X DT GROUP CASH CAPEX

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % CASH CAPEX Germany 1.216 1.069 1.066 999 4.349 1.036 (14,8) United States 1.713 2.272 1.329 1.055 6.369 1.708 (0,3) Europe 1 446 469 386 522 1.824 438 (1,8) Systems Solutions 93 73 66 151 384 35 (62,4) Group Development 86 106 99 161 452 119 38,4 Group Headquarters & Group Services 274 231 234 288 1.028 233 (15,0) Reconciliation (1) (20) (1) (26) (48) 0 (100,0) DT GROUP 2 3.827 4.199 3.180 3.150 14.357 3.570 (6,7) - thereof spectrum investment 145 875 143 75 1.239 217 49,7

DT IR BackUp Q1/20 22 / 73 X DT GROUP1 FREE CASH FLOW

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € %

Net profit (loss) 900 944 1.368 654 3.867 916 1,8 Profit (loss) attributable to non-controlling interests 425 428 451 98 1.401 179 (57,9) PROFIT (LOSS) AFTER INCOME TAXES 1.325 1.372 1.819 752 5.268 1.095 (17,4) Depreciation, amortization and impairment losses 4.204 4.351 4.256 4.852 17.663 4.429 5,4 Income tax expense/(benefit) 527 511 623 331 1.993 451 (14,4) Interest (income) and interest expenses 603 590 591 580 2.364 557 (7,6) Other financial (income) expense (131) (88) 30 108 (81) 408 n.a. Share of (profit) loss of associates and joint ventures accounted for using the equity method (66) (35) (6) 20 (87) (1) 98,5 (Profit) loss on the disposal of fully consolidated subsidiaries (1) 12 (142) (3) (134) 0 (100,0) Other non-cash transactions 189 125 118 137 569 230 21,7 (Gain) loss from the disposal of intangible assets and property, plant and equipment 26 15 41 30 112 (22) n.a. Change in assets carried as operating working capital 2 86 260 77 (1.237) (814) (265) n.a. Change in other operating assets 2 (329) (63) (35) 179 (248) (489) (48,6) Change in provisions (99) (297) 104 496 203 (100) (1,0) Change in liabilities carried as working capital 2 56 (483) (519) 506 (440) (207) n.a. Change in other operating liabilities 2 398 66 (256) (533) (325) 145 (63,6) Income taxes received (paid) (178) (193) (176) (212) (758) (144) 19,1 Dividends received 0 13 2 0 15 3 n.a. CASH GENERATED FROM OPERATIONS 6.609 6.157 6.528 6.004 25.297 6.090 (7,9) Interest received (paid) (600) (559) (604) (460) (2.223) (2.130) n.a. NET CASH FROM OPERATING ACTIVITIES 6.009 5.598 5.924 5.544 23.074 3.960 (34,1) Cash outflows for investments in (proceeds from disposal of) (3.638) (3.286) (3.010) (3.007) (12.942) (3.267) 10,2 Intangible assets (1.030) (1.808) (762) (774) (4.375) (1.156) (12,2) Property, plant and equipment (2.753) (2.353) (2.391) (2.308) (9.806) (2.328) 15,4 Spectrum investment 145 875 143 75 1.239 217 49,7 FREE CASH FLOW (BEFORE DIVIDEND PAYMENTS AND SPECTRUM) 2.370 2.312 2.913 2.537 10.133 2.294 (3,2) FREE CASH FLOW AL (BEFORE DIVIDEND PAYMENTS 3 AND SPECTRUM) 1.557 1.546 2.147 1.763 7.013 1.287 (17,3)

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted. 2 New split of change in assets and other liabilities carried as working capital from Q1 2019 onwards. 3 Without the interest payments for zero coupon bonds. DT IR BackUp Q1/20 23 / 73 X DT GROUP1 PERSONNEL

Mar. 31 Jun. 30 Sep. 30 Dec. 31 Mar. 31 Change compared to Change compared to AT REPORTING DATE Note 2019 2019 2019 2019 2020 prior quarter prior year abs. % abs. % Germany 62.358 61.552 61.181 60.501 59.878 (623) (1,0) (2.480) (4,0) United States 45.786 46.600 47.496 47.312 45.335 (1.977) (4,2) (451) (1,0) Europe 47.191 46.017 45.240 44.591 43.315 (1.276) (2,9) (3.876) (8,2) Systems Solutions 38.036 37.803 37.718 38.096 37.960 (136) (0,4) (76) (0,2) Group Development 2.795 2.739 2.615 2.603 2.671 68 2,6 (124) (4,4) Group Headquarters & Group Services 18.442 18.050 17.635 17.430 17.284 (146) (0,8) (1.158) (6,3) DT GROUP 214.609 212.762 211.884 210.533 206.443 (4.090) (1,9) (8.166) (3,8) of which: Domestic 97.414 95.974 95.029 94.111 93.168 (943) (1,0) (4.246) (4,4) of which: Civil servants (in Germany, with an active service relationship) 13.135 12.595 12.281 12.153 11.964 (189) (1,6) (1.171) (8,9) of which: International 117.195 116.788 116.855 116.422 113.274 (3.148) (2,7) (3.921) (3,3)

Q1 Q2 Q3 Q4 Q1 Change compared to AVERAGE Note 2019 2019 2019 2019 2020 prior year abs. % Germany 62.739 61.696 61.309 60.761 60.221 (2.518) (4,0) United States 46.008 46.051 47.225 46.892 45.745 (263) (0,6) Europe 2 47.637 46.410 45.490 44.728 43.773 (3.864) (8,1) Systems Solutions 38.143 37.841 37.746 37.932 37.981 (162) (0,4) Group Development 2 2.824 2.744 2.656 2.610 2.671 (153) (5,4) Group Headquarters & Group Services 18.528 18.172 17.692 17.549 17.381 (1.147) (6,2) DT GROUP 2 215.880 212.914 212.118 210.470 207.771 (8.109) (3,8) of which: Domestic 97.964 96.335 95.224 94.550 93.664 (4.300) (4,4) of which: Civil servants (in Germany, with an active service relationship) 13.360 12.778 12.355 12.194 12.107 (1.253) (9,4) of which: International 2 117.916 116.579 116.894 115.920 114.107 (3.809) (3,2)

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted. 2 The Q2/19 numbers are retrospectively adjusted due to technical problems.

DT IR BackUp Q1/20 24 / 73 X EXCHANGE RATES AVERAGE

Q1 Q2 Q3 Q4 FY Q1 2019 2019 2019 2019 2019 2020 1 € 1 € 1 € 1 € 1 € 1 € US Dollar (USD) 1,13574 1,12344 1,11184 1,10720 1,119500 1,102555 British pound (GBP) 0,87255 0,87406 0,90221 0,86027 0,877777 0,862247 Czech korunas (CZK) 25,68231 25,68528 25,73334 25,57623 25,670600 25,628934 Croatian kunas (HRK) 7,42181 7,41917 7,39454 7,43887 7,418122 7,490637 Hungarian forints (HUF) 317,91549 323,02559 328,11628 331,98988 325,278357 339,102599 Macedonian Denar (MKD) 61,56574 61,54831 61,15684 61,56536 61,452995 61,661405 Polish Zloty (PLN) 4,30182 4,28354 4,31867 4,28721 4,298358 4,323913 Romanian leu (RON) 4,73577 4,74910 4,73178 4,76726 4,745589 4,797751

END OF PERIOD Mar. 31 Jun. 30 Sep. 30 Dec. 31 Mar. 31 2019 2019 2019 2019 2020 1 € 1 € 1 € 1 € 1 € US Dollar (USD) 1,12335 1,13720 1,09085 1,12290 1,095799 British pound (GBP) 0,85800 0,89585 0,88630 0,85119 0,886847 Czech korunas (CZK) 25,80392 25,42795 25,81844 25,40696 27,308452 Croatian kunas (HRK) 7,43716 7,40039 7,41087 7,44070 7,619222 Hungarian forints (HUF) 321,04481 323,50943 334,97471 330,59928 360,034707 Macedonian Denar (MKD) 61,55361 61,59380 61,51386 61,61467 61,698688 Polish Zloty (PLN) 4,29995 4,24930 4,37869 4,25644 4,551744 Romanian leu (RON) 4,76179 4,73671 4,75091 4,78295 4,828655

Please note: the above quarterly and yearly average exchange rates are given as an indication only.

DT IR BackUp Q1/20 25 / 73 X CONTENT DT

DT IR BackUp Q1/20 26 / 73 X GERMANY FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 5.357 5.388 5.472 5.669 21.886 5.405 0,9 NET REVENUE 5.036 5.059 5.141 5.336 20.572 5.092 1,1 EBITDA 2.114 2.161 2.260 2.209 8.744 2.170 2,6 EBITDA margin (EBITDA / total revenue) % 39,5 40,1 41,3 39,0 40,0 40,1 0,6p EBITDA AL 2.108 2.153 2.254 2.205 8.720 2.164 2,7 EBITDA AL margin (EBITDA AL / total revenues) % 39,4 40,0 41,2 38,9 39,8 40,0 0,6p Depreciation, amortization and impairment losses (1.083) (1.144) (961) (1.067) (4.256) (1.071) 1,1 Profit (loss) from operations = EBIT 1.031 1.017 1.299 1.142 4.488 1.099 6,6 CASH CAPEX (before spectrum investment) 1.216 1.031 993 997 4.238 1.036 (14,8)

FINANCIALS (AS REPORTED) Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 5.357 5.388 5.472 5.669 21.886 5.405 0,9 NET REVENUE 5.036 5.059 5.141 5.336 20.572 5.092 1,1 EBITDA 1.946 2.036 2.199 2.138 8.319 1.974 1,4 EBITDA margin (EBITDA / total revenue) % 36,3 37,8 40,2 37,7 38,0 36,5 0,2p Depreciation, amortization and impairment losses (1.083) (1.144) (961) (1.067) (4.256) (1.071) 1,1 Profit (loss) from operations = EBIT 863 892 1.238 1.071 4.063 903 4,6 CASH CAPEX 1.216 1.069 1.066 999 4.349 1.036 (14,8)

DT IR BackUp Q1/20 27 / 73 X GERMANY EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % Profit (loss) from operations = EBIT 863 892 1.238 1.071 4.063 903 4,6 - Depreciation, amortization and impairment losses (1.083) (1.144) (961) (1.067) (4.256) (1.071) 1,1 = EBITDA 1.946 2.036 2.199 2.138 8.319 1.974 1,4 - Special factors affecting EBITDA (168) (125) (61) (71) (425) (196) (16,7) = EBITDA (ADJUSTED FOR SPECIAL FACTORS) 2.114 2.161 2.260 2.209 8.744 2.170 2,6 = EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) 2.108 2.153 2.254 2.205 8.720 2.164 2,7

SPECIAL FACTORS Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECTS ON EBITDA (168) (125) (61) (71) (425) (196) (16,7) - of which personnel (163) (121) (56) (56) (396) (191) (17,2) - of which other (5) (4) (5) (15) (29) (5) 0,0 EFFECTS ON PROFIT (LOSS) FROM OPERATIONS = EBIT (168) (125) (61) (71) (425) (196) (16,7) - of which personnel (163) (121) (56) (56) (396) (191) (17,2) - of which other (5) (4) (5) (15) (29) (5) 0,0

DT IR BackUp Q1/20 28 / 73 X GERMANY OPERATIONALS

Q1 Q2 Q3 Q4 Q1 Change Note 2019 2019 2019 2019 2020 % GERMANY ACCESS LINES Fixed network ('000) 1 18.414 18.228 17.996 17.824 17.711 (3,8) retail IP-based ('000) 16.065 16.614 17.158 17.479 17.510 9,0 Broadband ('000) 1 13.608 13.636 13.683 13.730 13.813 1,5 Fiber ('000) 2 7.609 7.913 8.231 8.529 8.787 15,5 TV (incl. IPTV, SAT) ('000) 1 3.419 3.477 3.544 3.618 3.678 7,6 ULLs ('000) 1 5.050 4.913 4.770 4.638 4.505 (10,8) Wholesale Broadband ('000) 1 6.975 7.126 7.282 7.372 7.445 6,7 Fiber ('000) 2 5.285 5.503 5.719 5.863 5.994 13,4 MOBILE CUSTOMERS Total ('000) 44.657 44.827 45.598 46.189 46.960 5,2 - contract ('000) 25.195 24.974 25.138 25.291 25.475 1,1 - prepaid ('000) 19.462 19.853 20.460 20.898 21.485 10,4

GERMANY MOBILE COMMUNICATIONS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % AVERAGE MONTHLY CHURN (%) 1,1 1,0 1,0 1,0 1,0 1,0 (0,1p) - contract (%) 1,3 1,2 1,0 1,1 1,1 1,1 (0,2p) ARPU (€) 12 12 12 12 12 12 0,0 - contract (€) 21 22 22 21 22 21 0,0 - prepaid (€) 2 2 2 2 2 2 0,0

1 Figures do not add up 2 Sum of all FTTx accesses (e.g. FTTC/VDSL, Vectoring and

DT IR BackUp Q1/20 29 / 73 X GERMANY REVENUE SPLIT - PRODUCTS

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % GERMANY 5.357 5.388 5.472 5.669 21.886 5.405 0,9 FIXED NETWORK CORE BUSINESS 2.353 2.340 2.357 2.391 9.441 2.364 0,5 of which Fixed Revenues 1.749 1.734 1.738 1.746 6.968 1.755 0,3 Voice only revenues 304 284 271 258 1.117 243 (20,1) Broadband revenues 1.054 1.053 1.059 1.071 4.237 1.083 2,8 TV revenues 391 397 408 417 1.614 429 9,7 of which Variable Revenues 145 133 130 125 533 133 (8,3) of which Revenues from devices (fixed line) 142 141 145 140 567 143 0,7 thereof revenues from sale of devices and accessories (Fixed line) 26 24 26 19 94 18 (30,8) MOBILE COMMUNICATIONS 1.947 1.991 2.048 2.188 8.175 1.980 1,6 of which Service Revenues 1.521 1.552 1.572 1.557 6.203 1.546 1,7 WHOLESALE SERVICES FIXED NETWORK 876 877 893 899 3.545 897 2,4 of which access full ULL 165 157 169 163 654 160 (3,0) of which wholesale broadband access lines 374 376 379 387 1.516 388 3,7 VALUE-ADDED SERVICES 39 37 38 38 152 37 (5,1) OTHERS 142 142 136 152 571 128 (9,9)

REVENUE SPLIT - SEGMENTS

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % GERMANY 5.357 5.388 5.472 5.669 21.886 5.405 0,9 Consumer 2.833 2.861 2.909 3.017 11.621 2.873 1,4 Business 1.510 1.514 1.539 1.618 6.181 1.522 0,8 Wholesale 931 927 940 941 3.739 937 0,6 Others 83 86 84 93 345 73 (12,0)

DT IR BackUp Q1/20 30 / 73 GERMANY Magenta Mobil

Magenta Mobil PLANS IN € S M L XL Monthly charge (without handset) 39.95 49.95 59.95 84.95 Monthly charge (with handset) 49.95 59.95 69.95 94.95 Monthly charge (with top handset) 59.95 69.95 79.95 104.95 Monthly charge (with premium handset) ---- 79.95 89.95 114.95 Monthly charge (with premium-plus------99.95 124.95 handset) Monthly charge (with hero- handset) ------109.95 134.95 Voice and SMS 1 flat flat flat flat Data flat flat flat flat - Data Speed (download) max max max max - Data Speed (upload) max max max max - Data Volume until speed step down 6 GB 12 GB 24 GB unlimited - Data Network LTE/5G LTE/5G LTE/5G LTE/5G Music&Video Music&Video Music Music&Video Streaming (StreamOn) Gaming Gaming Gaming Gaming Social&Chat Social&Chat VoIP free free free free Tethering free free free free MMS all net 0.39 0.39 0.39 0.39 International Calls (minutes) ------International SMS (pieces) ------HotSpot Flatrate free free free free MultiSim ------Roaming Voice, SMS and Data free (EU) free (EU) free (EU) 32 GB (EU) Fixed line number ------Activation fee 39.95 39.95 39.95 39.95 Duration of contract 24 months 24 months 24 months 24 months 1 Voice and sms within all german networks (mobile and fixed network).

DT IR BackUp Q1/20 31 / 73 GERMANY Magenta Mobil Premium

Premium PLANS IN € XL PREMIUM Monthly charge (with top handset) 199.95 handset upgrade period 12 months Voice and SMS 1 flat Data flat - Data Speed (download) max - Data Speed (upload) max - Data Volume until speed step down flat - Data Network 5G/LTE Streaming n.r. VoIP free Tethering free MMS all net 0.39 International Calls (minutes) flat3 International SMS (pieces) flat3 HotSpot Flatrate free MultiSim free2 Roaming Voice, SMS and Data free (EU Plus3) Fixed line number free Activation fee 39.95 Duration of contract 24 months

1 Voice and sms within all german networks (mobile and fixed network). 2 up to ten MultiSIM bookable, 2 MultiSIM free 3 EU, Switzerland, US, Canada, Turkey

DT IR BackUp Q1/20 32 / 73 GERMANY Mobile Options

StreamOn StreamOn Music StreamOn Music & Video StreamOn Gaming StreamOn Social&Chat

Monthly charge 0 0 0 4.95 Music &Video Streaming zero-rating Music Streaming zero-rating for connected Online gaming zero-rating for connected partners, Online social media zero-rating for connected Description for connected partners, HD- partners high resolution partners, high resolution resolution Starting with MagentaMobil M Starting with MagentaMobil S /MagentaMobil Starting with MagentaMobil S/Family Card S Starting with MagentaMobil S/Family Card S /Young Booking restrictions /MagentaMobil M Young / S Young / FamilyCard S /Young S S FamilyCard M

INTERNATIONAL OPTIONS IN € INTERNATIONAL 50, 100 or 400 INTERNATIONAL SMS 100

Monthly charge 4.95, 9.95 or 29.95 9.95

Description 50, 100 or 400 min. mobile and fixed Network to Country Code 1 + 2 100 SMS to Country Code 1 + 2

ADDITIONAL DATA VOLUME OPTIONS IN € Data S Data M Data L Monthly charge 9.95 14.95 24.95 Additional Data Volume (per month) 1 GB 2 GB 5 GB

OHTER OPTIONS IN € MULTISIM DayFlat unlimited Monthly charge from 4.95 onwards 5.95 Description ten MultiSIM bookable. Data Full Flat for 24h

DT IR BackUp Q1/20 33 / 73 GERMANY MAGENTA ZUHAUSE VIA FUNK (DP VIA WIRELESS)

DOUBLE PLAY VIA WIRELESS Monthly Charge1 € 49,95 Data Speed (Mbit/s) 50Mbit/s Data Volume until Speed Step Down (SSD) 60GB Voice minutes € Cent/Minute fixed net national flat international from 2.9 fixed to mobile 19.0 Options Speed On €14.95 per 15GB fixed to mobile 12.9 cents/minute, minimum charge €4 per month Telekom mobile flat €14,95 per month mobile flat €19,95 per month CountryFlat 1 €3.94 per month CountryFlat 2 €14.95 per month Set up charge €69,95 (non recurring)

1 Without terminal equipment. Monthly rent for Router €4.95 For general conditions and further details, please see www.telekom.de. All prices in € including VAT.

DT IR BackUp Q1/20 GERMANY MAGENTA ZUHAUSE

MAGENTA ZUHAUSE IN € ZUHAUSE START1 ZUHAUSE S1 ZUHAUSE M1 ZUHAUSE L1 ZUHAUSE XL1 ZUHAUSE XXL1 ZUHAUSE GIGA1 24.95 34.952 39.952 44.952 54.952 59.952 79.95

16 Mbit/s bandwidth 16 Mbit/s bandwidth, flat rate Internet 50 Mbit/s bandwidth flat rate Internet 100 Mbit/s bandwidth flat rate Internet 250 Mbit/s bandwidth flat rate Internet 500 Mbit/s bandwidth flat rate Internet 1.000 Mbit/s bandwidth flat rate Internet usage 100GB Internet usage usage flat rate voice usage usage flat rate voice usage usage flat rate voice usage usage all net flat rate voice usage usage all net flat rate voice usage all net flat rate voice usage

MAGENTA TV MagentaTV (Sat) --- 10.00 3,4 5.005 MagentaTV Plus (Sat) --- 15.00 3,4 10.005 MagentaTV Netflix (Sat) --- 24.00 3,4 --- CITY, DLD CENT/MINUTE Peak/Off peak included international from 2.9 ct fixed to mobile 19.0 ct incl. CALLING PLANS fixed to mobile 12.9 ct/minute, 4.00 monthly minimum charge ------fixed to T-Mobile flatrate 14.95 ------fixed to mobile flatrate 19.95 ------CountryFlat 1 3.94 CountryFlat 2 14.95 Set-up 69.95 (non-recurring charge)

1 IP-Access incl. 2 voice channels and 3 telephone no. 2 Promotional price for new broadband customers: -€15.00/-€20.00/-€25.00/-€35.00/-€50.00 for the first 6 months (ZUHAUSE S/M/L/XL/XXL) 3 Additional (footnote 2) promotional price for new broadband customers: -€5.00 for the first 24 months (ZUHAUSE S) / -€5.00 ongoing (ZUHAUSE M/L/XL/XXL) 4 Promotional price for upgraders from Double Play tariffs: -€5.00 for the first 24 months 5 MagentaZuhause Giga TV tariffs not available via SAT All prices in € including VAT; excl. terminal equipment; excl. building connection fee All prices are charged on a monthly basis if not identified seperately (usage prices excluded) For general conditions and further details, please see www.telekom.de

DT IR BackUp Q1/20 35 / 73 GERMANY MAGENTA ZUHAUSE HYBRID

MAGENTA ZUHAUSE HYBRID IN € ZUHAUSE S1 HYBRID ZUHAUSE M1 HYBRID ZUHAUSE L1 HYBRID 34.952 39.952 44.952 16 Mbit/s bandwidth + Hybrid LTE-Boost (up 50 Mbit/s bandwidth3 + Hybrid LTE-Boost (up to 50 100 Mbit/s bandwidth + Hybrid LTE-Boost (up to 100 to 16 Mbit/s), flat rate Internet usage flat rate Mbit/s), flat rate Internet usage flat rate voice usage Mbit/s), flat rate Internet usage flat rate voice usage voice usage MAGENTA TV MagentaTV (Sat) 10.00 4,5 MagentaTV Plus (Sat) 15.00 4,5 CITY, DLD CENT/MINUTE national 0 ct international from 2.9 ct fixed to mobile 19.0 ct CALLING PLANS fixed to mobile 12.9 ct/minute, 4.00 monthly minimum charge fixed to T-Mobile flatrate 14.95 fixed to mobile flatrate 19.95 CountryFlat 1 3.94 CountryFlat 2 14.95 Set-up 69.95 (non-recurring charge)

1 IP-Access incl. 2 voice channels and 3 telephone no. 2 Promotional price for new broadband customers: -€15.00/-€20.00/-€25.00 for the first 6 months (ZUHAUSE S/M/L Hybrid) 3 16 Mbit/s DSL-bandwidth in non-VDSL-areas (ZUHAUSE M Hybrid (2)) 4 Additional (footnote 2) promotional price for new broadband customers: -€5.00 for the first 24 months (ZUHAUSE S Hybrid) / -€5.00 ongoing (ZUHAUSE M&L Hybrid) 5 Promotional price for upgraders from Double Play tariffs: -€5.00 for the first 24 months All prices excl. terminal equipment; Speedport Pro required (rental price per month: 9.95€, purchase price 399.99€); excl. building connection fee All prices in € including VAT; excl. terminal equipment. All prices are charged on a monthly basis if not identified seperately (usage prices excluded) For general conditions and further details, please see www.telekom.de

DT IR BackUp Q1/20 36 / 73 GERMANY SINGLE PLAY

SINGLE PLAY IN € CALL START CALL BASIC CALL COMFORT 21.95 21.95 31.94 voice usage per minute voice usage per minute voice flat rate (national calls) 120 minutes includes (national calls) CITY, CDL € CENT/MINUTE Peak/Off peak 2.9 flat international from 2.9 fixed to mobile 19.0 CALLING PLANS CountryFlat 1 € 3.94 per month CountryFlat 2 €14.95 per month fixed to mobile 12.9 cents/minute, minimum charge €4 per month fixed to T-Mobile flatrate €14.95 per month fixed to mobile flatrate €19.95 per month Set-up 69.95 (non-recurring charge) For general conditions and further details, please see www.telekom.de. All prices in € including VAT, excl. terminal equipment

DT IR BackUp Q1/20 37 / 73 FIXED NETWORK OVERVIEW DOM. INTERCONNECTION TARIFFS (EXCL. VAT)

PEAK PEAK OFF-PEAK OFF-PEAK TERMINATION FEES IN CENT/MIN. (9:00-18:00), OLD (9:00-18:00), NEW1 (18:00-9:00), OLD (18:00-9:00), NEW1 Local 0.08 0.06 0.08 0.06 Single transit entfallen entfallen entfallen entfallen Double transit national 0.10 0.08 0.10 0.08

PEAK PEAK OFF-PEAK OFF-PEAK ORIGINATION FEES IN CENT/MIN. (9:00-18:00), OLD (9:00-18:00), NEW1 (18:00-9:00), OLD (18:00-9:00), NEW1 11 PricesPrices areare valid valid from from Jan.Jan. 01,01, 20172020 2020 to to Dec. Dec. 31, 31, 2020.2018. 2020. Local 0.13 0.13 0.13 0.13 22 Depending Depending on on complexity complexity ––validvalid toto Sep.Sep. 30,30, 2016.2018.2018. Single transit entfallen entfallen entfallen entfallen 33 Depending Depending on on complexity complexity --validvalid toto Sep.Sep. 30,30, 2018.2020. 2020. 44 Twisted Twisted pairpair copper copper access access line line valid valid tototo Jun. Jun.Jun. 30, 30,30, 2016. 2019.2019. Double transit national 0.23 0.13 0.23 0.13 55 Twisted Twisted pair pair copper copper access access line line valid valid to to Jun.Jun.Jun. 30, 30,30, 2019. 2022. 2022. FULLY UNBUNDLED (“ULL“) OLD NEW 66 valid valid to to Jun. Jun. 30,30, 2014. 2014. 77 valid valid from from Jul.Jul. 01,01, 2014.2014. One time fee 27.11 2 25.03 3 7 valid from Jul. 01, 2014. 88 Since Since Dec.Dec. 01,01, 20102010 thesethese pricesprices areare ex ex post. post. Monthly fee 10.02 4 10.19 5 99 No No price price changeschanges sincesince Jul.Jul. 01,01, 20112011 .. PARTIALLY UNBUNDLED (“LINE 1010 MonthlyMonthly fee fee for for VDSL VDSL Vectoring Vectoring (over (over 50 50 to to 100 100 OLD NEW SHARING“) Mbit/s)Mbit/s) : : 29.52 29.52 €€. . LLaunchaunch Aug.Aug. 01,01, 2014.2014. 11 12 One time fee 34.13 34.23 11 Depending on complexity – valid to Jun. 3030,, 2014. Monthly fee 1.68 6 1.78 7 12 Depending on complexity – valid from Jul. 01, 2014.

IP-BSA ADSL SHARED (CLASSIC) OLD NEW One time fee --- 44.87 8,9 Monthly fee --- 8.12 8,9

IP-BSA ADSL STAND ALONE (CLASSIC) OLD NEW

One time fee --- 47.68 8,9 Monthly fee --- 18.20 8,9 IP-BSA VDSL (until 50 Mbit/s)10 STAND OLD (IN €) NEW (IN €) ALONE (CLASSIC) One time fee --- 46.43 8,9 Monthly fee --- 25.32 8,9

DT IR BackUp Q1/20 38 / 73 X CONTENT DT

DT IR BackUp Q1/20 39 / 73 X UNITED STATES FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 9.796 9.826 10.006 10.791 40.420 10.157 3,7 NET REVENUE 9.796 9.826 10.005 10.791 40.418 10.157 3,7 EBITDA 1 3.309 3.534 3.563 3.403 13.809 3.867 16,9 EBITDA margin (EBITDA / total revenues) % 33,8 36,0 35,6 31,5 34,2 38,1 4,3p EBITDA AL 2.679 2.872 2.874 2.710 11.134 3.160 18,0 EBITDA AL margin (EBITDA AL / total revenues) % 27,3 29,2 28,7 25,1 27,5 31,1 3,8p Depreciation, amortization and impairment losses (1.835) (1.870) (1.976) (2.097) (7.777) (2.084) (13,6) Profit (loss) from operations = EBIT 1.474 1.665 1.587 1.307 6.032 1.782 20,9 CASH CAPEX (before spectrum investment) 2 1.604 1.491 1.259 982 5.336 1.492 (7,0)

FINANCIALS (AS REPORTED)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 9.796 9.826 10.006 10.791 40.420 10.157 3,7 NET REVENUE 9.796 9.826 10.005 10.791 40.418 10.157 3,7 EBITDA 3.210 3.334 3.421 3.300 13.265 3.593 11,9 EBITDA margin (EBITDA / total revenue) % 32,8 33,9 34,2 30,6 32,8 35,4 2,6p Depreciation, amortization and impairment losses (1.835) (1.870) (1.976) (2.097) (7.777) (2.084) (13,6) Profit (loss) from operations = EBIT 1.376 1.465 1.444 1.203 5.488 1.509 9,7 CASH CAPEX 1.713 2.272 1.329 1.055 6.369 1.708 (0,3)

1 Excluding special factors affecting EBITDA of EUR (99mn) in Q1/19, EUR (200mn) in Q2/19, EUR (142mn) in Q3/19, EUR (103mn) in Q4/19, and EUR (274mn) in Q1/20 2 Adjusted by excluding spectrum purchases of EUR 110mn in Q1/19, EUR 781mn in Q2/19, EUR 70mn in Q3/19, EUR 73mn in Q4/19 and EUR 216mn in Q1/20

DT IR BackUp Q1/20 40 / 73 X UNITED STATES EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % Profit (loss) from operations = EBIT 1.376 1.465 1.444 1.203 5.488 1.509 9,7 - Depreciation, amortization and impairment losses (1.835) (1.870) (1.976) (2.097) (7.777) (2.084) (13,6) = EBITDA 3.210 3.334 3.421 3.300 13.265 3.593 11,9 - Special factors affecting EBITDA (99) (200) (142) (103) (544) (274) n.a. = EBITDA (ADJUSTED FOR SPECIAL FACTORS) 1 3.309 3.534 3.563 3.403 13.809 3.867 16,9 = EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) 2.679 2.872 2.874 2.710 11.134 3.160 18,0

SPECIAL FACTORS

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECTS ON EBITDA (99) (200) (142) (103) (544) (274) n.a. - of which personnel (2) (2) (3) (11) (17) (28) n.a. - of which other (97) (198) (140) (93) (527) (245) n.a. EFFECTS ON PROFIT (LOSS) FROM OPERATIONS = EBIT (99) (200) (142) (103) (544) (274) n.a. - of which personnel (2) (2) (3) (11) (17) (28) n.a. - of which other (97) (198) (140) (93) (527) (245) n.a.

1 Excluding special factors affecting EBITDA of EUR (99mn) in Q1/19, EUR (200mn) in Q2/19, EUR (142mn) in Q3/19, EUR (103mn) in Q4/19 and EUR (274mn) in Q1/20

DT IR BackUp Q1/20 41 / 73 X UNITED STATES OPERATIONAL

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % BRANDED ('000) 4 64.744 65.983 66.503 67.895 67.895 68.543 5,9 Branded postpaid ('000) 4 43.538 44.646 45.720 47.034 47.034 47.811 9,8 Branded prepay ('000) 4 21.206 21.337 20.783 20.860 20.860 20.732 (2,2) NET ADDS ('000) 5 1.088 1.239 1.136 1.392 4.854 648 (40,4) Branded postpaid ('000) 1.019 1.108 1.074 1.315 4.515 777 (23,7) Branded prepay ('000) 69 131 62 77 339 (128) n.a. AVERAGE MONTHLY CHURN - Branded postpaid (%) 1,1 0,9 1,0 1,2 1,1 1,0 (0,1p) - Branded prepay (%) 3,9 3,5 4,0 4,0 3,8 3,5 (0,4p) TOTAL REVENUES (€ million) 9.796 9.826 10.006 10.791 40.420 10.157 3,7 Service revenue (€ million) 1 7.151 7.393 7.597 7.749 29.891 7.801 9,1 EBITDA (ADJUSTED FOR SPECIAL FACTORS) (€ million) 2 3.309 3.534 3.563 3.403 13.809 3.867 16,9 EBITDA margin (adjusted for special factors) (EBITDA / total revenue) (%) 33,8 36,0 35,6 31,5 34,2 38,1 4,3p EBITDA margin (adjusted for special factors) (EBITDA / service revenue) (%) 46,3 47,8 46,9 43,9 46,2 49,6 3,3p EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) (€ million) 2.679 2.872 2.874 2.710 11.134 3.160 18,0 EBITDA AL margin (adjusted for special factors) (EBITDA AL / total revenue) (%) 27,3 29,2 28,7 25,1 27,5 31,1 3,8p ARPU - Branded postpaid (€) 37 37 38 37 37 37 0,0 - Branded prepay (€) 32 33 33 34 33 34 6,3 ARPA postpaid 113 115 117 116 115 117 3,5 CASH CAPEX (€ million) 1.713 2.272 1.329 1.055 6.369 1.708 (0,3) CASH CAPEX (ADJUSTED FOR SPECIAL FACTORS) (€ million) 3 1.604 1.491 1.259 982 5.336 1.492 (7,0)

1 Includes revenues from providing recurring wireless, customer roaming and handset insurance services. 2 Excluding special factors affecting EBITDA of EUR (99mn) in Q1/19, EUR (200mn) in Q2/19, EUR (142mn) in Q3/19, EUR (103mn) in Q4/19 and EUR (274mn) in Q1/20 3 Adjusted by excluding spectrum purchases of EUR 110mn in Q1/19, EUR 781mn in Q2/19, EUR 70mn in Q3/19, EUR 73mn in Q4/19 and EUR 216mn in Q1/20 4 T-Mobile's historical metrics have changed to conform with the current branded customer presentation. Branded customer metrics revenues exclude machine-to-machine, MVNO, third party roaming and third party one-time fees. Certain historical customer numbers may not tie to historical reports due to rounding. 5 Starting in Q1 2020, T-Mobile US discontinued reporting of wholesale customers due to the expansion of M2M and Internet of Things (“loT”) products and instead will continue to focus on branded customer reporting.

For plan details see: https://www.t-mobile.com/cell-phone-plans https://prepaid-phones.t-mobile.com/prepaid-plans https://business.t-mobile.com/t-mobile-one-business https://www.metropcs.com/shop/plans DT IR BackUp Q1/20 42 / 73 X UNITED STATES OPERATIONAL IN US-$

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % BRANDED ('000) 4 64.744 65.983 66.503 67.895 67.895 68.543 5,9 Branded postpaid ('000) 4 43.538 44.646 45.720 47.034 47.034 47.811 9,8 Branded prepay ('000) 4 21.206 21.337 20.783 20.860 20.860 20.732 (2,2) NET ADDS ('000) 5 1.088 1.239 1.136 1.392 4.854 648 (40,4) Branded postpaid ('000) 1.019 1.108 1.074 1.315 4.515 777 (23,7) Branded prepay ('000) 69 131 62 77 339 (128) n.a. AVERAGE MONTHLY CHURN - Branded postpaid (%) 1,1 0,9 1,0 1,2 1,1 1,0 (0,1p) - Branded prepay (%) 3,9 3,5 4,0 4,0 3,8 3,5 (0,4p) TOTAL REVENUES (USD million) 11.124 11.041 11.120 11.950 45.236 11.198 0,7 Service revenue (USD million) 1 8.121 8.308 8.444 8.581 33.454 8.601 5,9 EBITDA (ADJUSTED FOR SPECIAL FACTORS) (USD million) 2 3.758 3.972 3.960 3.768 15.457 4.264 13,5 EBITDA margin (adjusted for special factors) (EBITDA / total revenue) (%) 33,8 36,0 35,6 31,5 34,2 38,1 4,3p EBITDA margin (adjusted for special factors) (EBITDA / service revenue) (%) 46,3 47,8 46,9 43,9 46,2 49,6 3,3p EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) (USD million) 3.042 3.227 3.194 3.001 12.463 3.484 14,5 EBITDA AL margin (adjusted for special factors) (EBITDA AL/ total revenue) (%) 27,3 29,2 28,7 25,1 27,6 31,1 3,8p BLENDED ARPU - Branded postpaid (USD) 42 42 42 42 42 41 (2,4p) - Branded prepay (USD) 37 37 37 38 37 37 0,0p ARPA postpaid 128 129 130 129 129 129 0,8 CASH CAPEX (USD million) 1.946 2.556 1.481 1.168 7.151 1.885 (3,1) CASH CAPEX (ADJUSTED FOR SPECIAL FACTORS) (USD million) 3 1.821 1.675 1.404 1.087 5.987 1.646 (9,6)

1 Includes revenues from providing recurring wireless, customer roaming and handset insurance services. 2 Excluding special factors affecting EBITDA of USD (112mn) in Q1/19, USD (225mn) in Q2/19, USD (158mn) in Q3/19, USD (115mn) in Q4/19 and USD (302mn) in 3 Adjusted by excluding spectrum purchases of USD 125mn in Q1/19, USD 881mn in Q2/19, USD 77mn in Q3/19, USD 81mn in Q4/19 and USD 239mn in Q1/20 4 T-Mobile's historical metrics have changed to conform with the current branded customer presentation. Branded customer metrics revenues exclude machine-to-machine, MVNO, third party roaming and third party one-time fees. Certain historical customer numbers may not tie to historical reports due to rounding. 5 Starting in Q1 2020, T-Mobile US discontinued reporting of wholesale customers due to the expansion of M2M and Internet of Things (“loT”) products and instead will continue to focus on branded customer reporting.

DT IR BackUp Q1/20 44 / 73 X EUROPE1 FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 2.891 2.978 3.074 3.225 12.168 2.903 0,4 NET REVENUE 2.808 2.891 2.982 3.127 11.808 2.816 0,3 EBITDA 2 1.059 1.099 1.196 1.105 4.460 1.073 1,3 EBITDA margin (EBITDA / total revenue) % 36,6 36,9 38,9 34,3 36,7 37,0 0,4p EBITDA AL 945 991 1.086 982 4.005 963 1,9 EBITDA AL margin (EBITDA / total revenue) % 32,7 33,3 35,3 30,4 32,9 33,2 0,5p Depreciation, amortization and impairment losses 5 (696) (681) (695) (739) (2.811) (662) 4,9 Profit (loss) from operations = EBIT 3 364 418 501 366 1.648 411 12,9 CASH CAPEX (before spectrum investment) 4 410 412 386 522 1.729 438 6,8

FINANCIALS (AS REPORTED) Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 2.891 2.978 3.074 3.225 12.168 2.903 0,4 NET REVENUE 2.808 2.891 2.982 3.127 11.808 2.816 0,3 EBITDA 1.035 1.038 1.172 1.069 4.313 1.034 (0,1) EBITDA margin (EBITDA / total revenue) % 35,8 34,9 38,1 33,1 35,4 35,6 (0,2p) Depreciation, amortization and impairment losses (696) (681) (695) (1.059) (3.131) (662) 4,9 Profit (loss) from operations = EBIT 339 357 477 9 1.182 372 9,7 CASH CAPEX 446 469 386 522 1.824 438 (1,8)

1 Sale of Telekom Albania, discontinuing our mobile business activities in the country effective May 7, 2019. Historical figures were not adjusted. 2 Special factors affecting EBITDA: EUR 24mn in Q1/19, EUR 62mn in Q2/19, EUR 24mn in Q3/19, EUR 36mn in Q4/19 and EUR 39mn in Q1/20. 3 Special factors affecting EBIT: EUR 24mn in Q1/19 (thereof EUR 24mn resulting from EBITDA), EUR 62mn in Q2/19 (thereof EUR 62mn resulting from EBITDA), EUR 24mn in Q3/19 (thereof EUR 24mn resulting from EBITDA), EUR 356mn in Q4/19 (thereof EUR 36mn resulting from EBITDA) and EUR 39mn in Q1/20 (thereof EUR 39mn resulting from EBITDA). 4 EUR 34mn in Hungary and EUR 1mn in Austria in Q1/19, EUR 57mn in Austria in Q2/19, EUR 1mn in Hungary in Q4/19 and EUR 1mn in Hungary in Q1/20. 5 The Q4/19 numbers are affected by EUR 320mn impairment in Romania.

DT IR BackUp Q1/20 45 / 73 EUROPE EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % Profit (loss) from operations = EBIT 339 357 477 9 1.182 372 9,7 - Depreciation, amortization and impairment losses (696) (681) (695) (1.059) (3.131) (662) 4,9 = EBITDA 1.035 1.038 1.172 1.069 4.313 1.034 (0,1) - Special factors affecting EBITDA (24) (62) (24) (36) (146) (39) (62,5) = EBITDA (ADJUSTED FOR SPECIAL FACTORS) 1.059 1.099 1.196 1.105 4.460 1.073 1,3 = EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) 945 991 1.086 982 4.005 963 1,9

SPECIAL FACTORS Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECTS ON EBITDA (24) (62) (24) (36) (146) (39) (62,5) - of which personnel (16) (62) (16) (21) (116) (22) (37,5) - of which other (8) 1 (8) (15) (31) (17) n.a. EFFECTS ON PROFIT (LOSS) FROM OPERATIONS = EBIT (24) (62) (24) (356) (466) (39) (62,5) - of which personnel (16) (62) (16) (21) (116) (22) (37,5) - of which other (8) 1 (8) (335) (351) (17) n.a.

DT IR BackUp Q1/20 46 / 73 GREECE FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 697 720 771 756 2.943 707 1,4 PRODUCT VIEW 697 720 771 756 2.943 707 1,4 - Fixed network 446 446 467 471 1.828 453 1,6 - Mobile communications 251 274 304 285 1.115 254 1,2 SEGMENT VIEW 697 720 771 756 2.943 707 1,4 - of which Consumer 398 412 425 420 1.655 402 1,0 - of which Business 137 142 145 166 589 148 8,0 EBITDA 1 300 308 354 320 1.282 306 2,0 EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 43,0 42,8 45,9 42,3 43,6 43,3 0,3p EBITDA AL 283 290 337 302 1.212 288 1,8 EBITDA AL MARGIN (EBITDA AL/ TOTAL REVENUE) % 40,6 40,3 43,7 39,9 41,2 40,7 0,1p CASH CAPEX (AS REPORTED) 55 134 66 101 357 90 63,6

1 Special factors affecting EBITDA: EUR 39mn in Q2/19 and EUR 4mn in Q4/19.

DT IR BackUp Q1/20 47 / 73 Greece OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 2.581 2.607 2.625 2.638 2.638 2.637 2,2 - IP Access Lines ('000) 2.191 2.458 2.597 2.636 2.636 2.637 20,4 Broadband Customers Retail ('000) 1 1.938 1.972 1.993 2.033 2.033 2.065 6,6 TV Customers (IPTV, SAT, Cable) ('000) 539 542 547 553 553 555 3,0 ULLs/Wholesale PSTN Access Lines ('000) 2.151 2.150 2.176 2.182 2.182 2.195 2,0 Wholesale Broadband Access Lines ('000) 145 159 169 167 167 161 11,0 MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 215 239 265 236 955 222 3,3 CUSTOMERS ('000) 7.682 7.605 7.505 7.365 7.365 7.311 (4,8) - contract ('000) 1 2.268 2.298 2.312 2.322 2.322 2.330 2,7 - prepaid ('000) 5.414 5.307 5.193 5.043 5.043 4.981 (8,0) NET ADDS ('000) (211) (77) (100) (140) (527) (54) 74,4 - contract ('000) 13 30 14 10 67 7 (46,2) - prepaid ('000) (224) (107) (114) (150) (594) (62) 72,3 AVERAGE MONTHLY CHURN (%) 2,5 2,0 2,2 2,4 2,3 1,6 (0,9p) - contract (%) 1,4 1,0 0,9 1,0 1,1 0,9 (0,5p) ARPU (€) 9 10 12 11 10 10 11,1 - contract (€) 21 23 26 22 23 21 0,0 - prepaid (€) 4 5 5 5 5 5 25,0

1 As of Q1/19 Hybrid customers have been reclassified from Mobile to Broadband Customers. Figures of previous periods were not adjusted.

DT IR BackUp Q1/20 48 / 73 ROMANIA FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % TOTAL REVENUE 217 231 243 289 980 237 9,2 PRODUCT VIEW 217 231 243 289 980 237 9,2 - Fixed network 113 128 137 174 552 141 24,8 - Mobile communications 103 103 106 115 428 96 (6,8) SEGMENT VIEW 217 231 243 289 980 237 9,2 - of which Consumer 132 129 132 137 530 128 (3,0) - of which Business 47 50 58 117 272 69 46,8 EBITDA 1 35 37 44 62 178 41 17,1 EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 16,1 16,0 18,1 21,5 18,2 17,3 1,2p EBITDA AL 26 29 36 51 141 34 30,8 EBITDA AL MARGIN (EBITDA AL / TOTAL REVENUE) % 12,0 12,6 14,8 17,6 14,4 14,3 2,3p CASH CAPEX (AS REPORTED) 59 26 30 38 153 27 (54,2)

1 Special factors affecting EBITDA: EUR 2mn in Q1/19, EUR 3mn in Q3/19, EUR 9mn in Q4/19 and EUR 17mn in Q1/20.

DT IR BackUp Q1/20 49 / 73 Romania OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 1.697 1.648 1.608 1.560 1.560 1.504 (11,4) - IP Access lines ('000) 829 825 825 815 815 799 (3,6) Broadband Customers Retail ('000) 1.078 1.055 1.040 1.014 1.014 978 (9,3) TV Customers (IPTV, SAT, Cable) ('000) 1.409 1.380 1.354 1.320 1.320 1.267 (10,1) MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 77 78 79 76 311 75 (2,6) CUSTOMERS ('000) 5.421 5.258 5.051 4.916 4.916 4.777 (11,9) - contract ('000) 2.341 2.354 2.366 2.427 2.427 2.461 5,1 - prepaid ('000) 3.079 2.904 2.685 2.490 2.490 2.317 (24,7) NET ADDS ('000) 60 (163) (207) (134) (444) (139) n.a. - contract ('000) 24 12 12 61 109 34 41,7 - prepaid ('000) 36 (175) (219) (195) (553) (173) n.a. AVERAGE MONTHLY CHURN (%) 3,2 3,6 3,9 3,7 3,6 3,8 0,6p - contract (%) 2,2 2,2 2,1 2,2 2,2 2,3 0,1p ARPU (€) 5 5 5 5 5 5 0,0 - contract (€) 7 8 8 8 8 7 0,0 - prepaid (€) 3 3 3 2 3 3 0,0

DT IR BackUp Q1/20 50 / 73 HUNGARY FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 459 455 456 502 1.872 427 (7,0) PRODUCT VIEW 459 455 456 502 1.872 427 (7,0) - Fixed network 218 218 211 246 892 193 (11,5) - Mobile communications 242 237 246 256 980 234 (3,3) SEGMENT VIEW 459 455 456 502 1.872 427 (7,0) - of which Consumer 272 271 271 285 1.099 264 (2,9) - of which Business 152 153 147 180 632 129 (15,1) EBITDA 1 139 155 165 160 619 130 (6,5) EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 30,3 34,1 36,2 31,9 33,1 30,4 0,1p EBITDA AL 121 139 149 143 551 114 (5,8) EBITDA AL MARGIN (EBITDA AL / TOTAL REVENUE) % 26,4 30,5 32,7 28,5 29,4 26,7 0,3p CASH CAPEX (AS REPORTED) 68 57 60 86 271 68 0,0

1 Special factors affecting EBITDA: EUR 9mn in Q1/19, EUR 1mn in Q2/19, EUR 2mn in Q3/19, EUR 1mn in Q4/19 and EUR 10mn in Q1/20.

DT IR BackUp Q1/20 51 / 73 HUNGARY 1 OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 1.673 1.680 1.690 1.703 1.703 1.718 2,7 - IP Access Lines ('000) 1.646 1.655 1.666 1.679 1.679 1.696 3,0 Broadband Customers Retail ('000) 1.170 1.189 1.209 1.231 1.231 1.256 7,4 TV Customers (IPTV, SAT, Cable) ('000) 1.106 1.122 1.138 1.157 1.157 1.179 6,6 ULLs/Wholesale PSTN Access Lines ('000) 3 3 3 3 3 1 (66,7) Wholesale Broadband Access Lines ('000) 28 26 24 23 23 22 (21,4) MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 179 182 184 179 724 174 (2,8) CUSTOMERS ('000) 5.305 5.332 5.323 5.369 5.369 5.378 1,4 - contract ('000) 3.352 3.391 3.416 3.456 3.456 3.470 3,5 - prepaid ('000) 1.953 1.941 1.907 1.913 1.913 1.908 (2,3) NET ADDS ('000) (25) 27 (9) 46 39 10 n.a. - contract ('000) 30 39 24 40 134 14 (53,3) - prepaid ('000) (55) (12) (34) 6 (95) (5) 90,9 AVERAGE MONTHLY CHURN (%) 1,5 1,2 1,4 1,2 1,3 1,1 (0,4p) - contract (%) 0,8 0,7 0,8 0,7 0,7 0,7 (0,1p) ARPU (€) 11 11 11 11 11 11 0,0 - contract (€) 16 16 16 15 16 15 (6,3) - prepaid (€) 3 3 3 3 3 3 0,0

1 M2M has been reclassified from contract to prepaid affecting customers, net adds, churn and ARPU. Numbers are retrospectively adjusted.

DT IR BackUp Q1/20 52 / 73 POLAND FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 348 366 373 399 1.486 360 3,4 PRODUCT VIEW 348 366 373 399 1.486 360 3,4 - Fixed network 30 31 32 43 135 34 13,3 - Mobile communications 318 335 342 356 1.351 326 2,5 SEGMENT VIEW 348 366 373 399 1.486 360 3,4 - of which Consumer 202 210 209 215 836 201 (0,5) - of which Business 123 130 131 150 534 132 7,3 EBITDA 1 110 118 116 110 454 112 1,8 EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 31,6 32,2 31,1 27,6 30,6 31,1 (0,5p) EBITDA AL 92 100 98 93 383 96 4,3 EBITDA AL MARGIN (EBITDA AL / TOTAL REVENUE) % 26,4 27,3 26,3 23,3 25,8 26,7 0,3p CASH CAPEX (AS REPORTED) 65 42 49 64 220 61 (6,2)

1 Special factors affecting EBITDA: EUR 2mn in Q1/19, EUR 1mn in Q2/19, EUR 1mn in Q3/19, EUR 4mn in Q4/19 and EUR 1mn in Q1/20.

DT IR BackUp Q1/20 53 / 73 Poland OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 18 19 19 18 18 26 44,4 - IP Access Lines ('000) 1 0 0 3 4 4 13 n.a. Broadband Customers Retail ('000) 11 10 11 18 18 18 63,6 MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 222 231 235 241 930 236 6,3 CUSTOMERS ('000) 10.823 10.869 10.908 10.954 10.954 10.982 1,5 - contract ('000) 7.298 7.374 7.434 7.504 7.504 7.530 3,2 - prepaid ('000) 3.525 3.495 3.474 3.450 3.450 3.452 (2,1) NET ADDS ('000) 36 47 38 46 167 28 (22,2) - contract ('000) 55 76 60 70 261 26 (52,7) - prepaid ('000) (20) (29) (21) (24) (94) 2 n.a. AVERAGE MONTHLY CHURN (%) 1,3 1,3 1,3 1,2 1,3 1,2 (0,1p) - contract (%) 0,8 0,7 0,7 0,7 0,8 0,7 (0,1p) ARPU (€) 7 7 7 7 7 7 0,0 - contract (€) 9 9 9 9 9 9 0,0 - prepaid (€) 3 3 3 3 3 3 0,0

1 Alignment with DT definition in Q1/20. Numbers are not retrospectively adjusted.

DT IR BackUp Q1/20 54 / 73 CZECH REPUBLIC FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 257 265 274 292 1.088 266 3,5 PRODUCT VIEW 257 265 274 292 1.088 266 3,5 - Fixed network 61 63 73 79 276 68 11,5 - Mobile communications 196 202 201 213 812 198 1,0 SEGMENT VIEW 257 265 274 292 1.088 266 3,5 - of which Consumer 130 136 135 149 549 139 6,9 - of which Business 113 114 119 128 474 112 (0,9) EBITDA 1 120 127 120 134 501 123 2,5 EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 46,7 47,9 43,8 45,9 46,0 46,2 (0,5p) EBITDA AL 107 114 107 120 448 110 2,8 EBITDA AL MARGIN (EBITDA AL / TOTAL REVENUE) % 41,6 43,0 39,1 41,1 41,2 41,4 (0,2p) CASH CAPEX (AS REPORTED) 48 22 26 38 134 26 (45,8)

1 Special factors affecting EBITDA: EUR 1mn in Q1/19, EUR 1mn in Q2/19, EUR 1mn in Q4/19 and EUR 1mn in Q1/20.

DT IR BackUp Q1/20 55 / 73 CZECH REPUBLIC 1 OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 2 430 454 477 533 533 568 32,1 - IP Access Lines ('000) 2 421 446 469 526 526 561 33,3 Broadband Customers Retail ('000) 3 274 290 305 320 320 350 27,7 TV Customers (IPTV, SAT, Cable) ('000) 101 113 124 149 149 171 69,3 ULLs/Wholesale PSTN Access Lines ('000) 4 4 4 4 4 4 0,0 MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 180 186 185 191 742 185 2,8 CUSTOMERS ('000) 6.186 6.224 6.282 6.265 6.265 6.267 1,3 - contract ('000) 3.580 3.586 3.615 3.591 3.591 3.602 0,6 - prepaid ('000) 2.605 2.638 2.667 2.673 2.673 2.665 2,3 NET ADDS ('000) (2) 39 58 (17) 77 2 n.a. - contract ('000) 21 6 29 (24) 32 11 (47,6) - prepaid ('000) (23) 33 29 7 45 (8) 65,2 AVERAGE MONTHLY CHURN (%) 1,3 1,2 1,2 1,4 1,3 1,2 (0,1p) - contract (%) 0,5 0,6 0,5 0,8 0,6 0,5 0,0p ARPU (€) 10 10 10 10 10 10 0,0 - contract (€) 14 15 15 15 15 15 7,1 - prepaid (€) 3 3 3 3 3 3 0,0

1 M2M has been reclassified from contract to prepaid affecting customers, net adds, churn and ARPU. Numbers are retrospectively adjusted. 2 Numbers are retrospectively adjusted due the harmonization of customer definition of IP based fixed accesses. 3 As of Q1/20: Includes 15k subscibers acquired in the Czech Republic from an internet service provider.

DT IR BackUp Q1/20 56 / 73 CROATIA FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 220 239 252 248 960 214 (2,7) PRODUCT VIEW 220 239 252 248 960 214 (2,7) - Fixed network 122 136 131 145 535 121 (0,8) - Mobile communications 98 103 121 103 425 93 (5,1) SEGMENT VIEW 220 239 252 248 960 214 (2,7) - of which Consumer 117 120 122 120 479 115 (1,7) - of which Business 69 81 75 93 317 70 1,4 EBITDA 1 94 97 115 99 406 89 (5,3) EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 42,7 40,6 45,6 39,9 42,3 41,6 (1,1p) EBITDA AL 83 91 104 82 360 76 (8,4) EBITDA AL MARGIN (EBITDA AL / TOTAL REVENUE) % 37,7 38,1 41,3 33,1 37,5 35,5 (2,2p) CASH CAPEX (AS REPORTED) 33 35 43 71 182 46 39,4

1 Special factors affecting EBITDA: EUR 1mn in Q1/19, EUR 1mn in Q2/19, EUR 9mn in Q3/19, EUR 3mn in Q4/19 and EUR 7mn in Q1/20.

DT IR BackUp Q1/20 57 / 73 CROATIA 1 OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 922 916 914 908 908 897 (2,7) - IP Access Lines ('000) 922 916 913 908 908 897 (2,7) Broadband Customers Retail ('000) 617 619 622 621 621 620 0,5 TV Customers (IPTV, SAT, Cable) ('000) 3 488 490 490 491 491 490 0,4 ULLs/Wholesale PSTN Access Lines ('000) 116 109 106 103 103 100 (13,8) Wholesale Broadband Access Lines ('000) 2 128 123 119 117 117 114 (10,9) MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 63 71 88 68 290 66 4,8 CUSTOMERS ('000) 2.262 2.286 2.359 2.274 2.274 2.248 (0,6) - contract ('000) 1.195 1.209 1.219 1.224 1.224 1.231 3,0 - prepaid ('000) 1.066 1.077 1.140 1.049 1.049 1.017 (4,6) NET ADDS ('000) (11) 24 73 (86) 1 (25) n.a. - contract ('000) 4 13 10 6 33 7 75,0 - prepaid ('000) (15) 11 63 (91) (32) (32) n.a. AVERAGE MONTHLY CHURN (%) 2,3 2,1 2,0 3,2 2,4 2,1 (0,2p) - contract (%) 1,3 1,0 0,9 1,1 1,1 1,0 (0,3p) ARPU (€) 9 10 13 10 11 11 22,2 - contract (€) 13 15 19 14 15 13 0,0 - prepaid (€) 5 6 6 5 5 5 0,0

1 M2M has been reclassified from contract to prepaid affecting customers, net adds, churn and ARPU. Numbers are retrospectively adjusted. 2 Q3/19 and Q4/19 were retrospectively adjusted due the harmonization of customer definition. 3 As of Q1/19 including Evo TV Services.

DT IR BackUp Q1/20 58 / 73 SLOVAKIA FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 185 190 199 211 785 186 0,5 PRODUCT VIEW 185 190 199 211 785 186 0,5 - Fixed network 96 97 102 110 404 98 2,1 - Mobile communications 89 93 97 101 381 88 (1,1) SEGMENT VIEW 185 190 199 211 785 186 0,5 - of which Consumer 105 108 115 119 447 108 2,9 - of which Business 70 71 71 81 293 69 (1,4) EBITDA 88 84 90 86 348 85 (3,4) EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 47,6 44,2 45,2 40,8 44,3 45,7 (1,9p) EBITDA AL 82 79 85 81 327 79 (3,7) EBITDA AL MARGIN (EBITDA AL / TOTAL REVENUE) % 44,3 41,6 42,7 38,4 41,7 42,5 (1,8p) CASH CAPEX (AS REPORTED) 40 27 38 46 151 41 2,5

DT IR BackUp Q1/20 59 / 73 SLOVAKIA 1 OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 854 854 855 860 860 859 0,6 - IP Access Lines ('000) 854 854 855 860 860 859 0,6 Broadband Customers Retail ('000) 550 557 565 576 576 583 6,0 TV Customers (IPTV, SAT, Cable) ('000) 621 623 627 635 635 638 2,7 Wholesale Broadband Access Lines ('000) 99 96 95 95 95 96 (3,0) MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 73 74 75 71 294 73 0,0 CUSTOMERS ('000) 2.391 2.402 2.432 2.428 2.428 2.409 0,8 - contract ('000) 1.368 1.375 1.395 1.420 1.420 1.411 3,1 - prepaid ('000) 1.023 1.027 1.038 1.007 1.007 997 (2,5) NET ADDS ('000) 21 12 30 (5) 58 (19) n.a. - contract ('000) (6) 7 19 26 46 (9) (50,0) - prepaid ('000) 28 4 11 (30) 12 (10) n.a. AVERAGE MONTHLY CHURN (%) 1,7 1,7 1,3 1,5 1,6 1,4 (0,3p) - contract (%) 1,4 0,9 0,7 0,6 0,9 1,1 (0,3p) ARPU (€) 10 10 10 10 10 10 0,0 - contract (€) 16 16 16 15 16 16 0,0 - prepaid (€) 2 2 2 2 2 2 0,0

1 M2M has been reclassified from contract to prepaid affecting customers, net adds, churn and ARPU. Numbers are retrospectively adjusted.

DT IR BackUp Q1/20 60 / 73 Austria FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 306 315 318 337 1.276 313 2,3 SEGMENT VIEW 306 315 318 337 1276 313 2,3 - of which Consumer 222 225 230 244 921 227 2,3 - of which Business 52 52 54 60 218 55 5,8 EBITDA 1 138 134 155 120 547 142 2,9 EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 45,1 42,5 48,7 35,6 42,9 45,4 0,3p EBITDA AL 118 114 136 99 467 123 4,2 EBITDA MARGIN AL (EBITDA AL / TOTAL REVENUE) % 38,6 36,2 42,8 29,4 36,6 39,3 0,7p CASH CAPEX (AS REPORTED) 60 108 63 64 294 66 10,0

OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 544 546 548 549 549 553 1,7 - IP ('000) 544 546 548 549 549 553 1,7 Broadband Customers ('000) 601 606 609 612 612 617 2,7 TV (IPTV, SAT, Cable) ('000) 447 442 438 433 433 429 (4,0) MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€) 171 175 181 180 707 177 3,5 CUSTOMERS ('000) 4.765 4.938 5.024 5.019 5.019 4.998 4,9 - contract ('000) 3.459 3.496 3.567 3.592 3.592 3.610 4,4 - prepaid ('000) 1.306 1.442 1.456 1.427 1.427 1.389 6,4 NET ADDS ('000) (16) 172 86 (5) 237 (20) (25,0) - contract ('000) (14) 37 71 25 118 18 n.a. - prepaid ('000) (2) 136 15 (30) 119 (38) n.a. AVERAGE MONTHLY CHURN (%) 2,6 3,4 2,5 2,9 2,8 2,7 0,1p - contract (%) 2,8 2,5 2,7 3,2 2,8 3,1 0,3p ARPU (€) 12 12 12 12 12 12 0,0 - contract (€) 15 16 16 16 16 16 6,7 - prepaid (€) 2 3 3 1 2 2 2 (33,3)

1 Special factors affecting EBITDA: EUR 9mn in Q1/19, EUR 11mn in Q2/19, EUR 6mn in Q3/19, EUR 10mn in Q4/19and EUR 2mn in Q1/20. 2 The Q1/19 number was retrospectively adjusted due to technical problem.

DT IR BackUp Q1/20 61 / 73 X CONTENT DT

DT IR BackUp Q1/20 62 / 73 SYSTEMS SOLUTIONS FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 1.630 1.673 1.657 1.845 6.805 1.628 (0,1) International Revenue 427 443 441 448 1.760 430 0,7 NET REVENUE 1.278 1.321 1.299 1.482 5.380 1.290 0,9 EBITDA 125 158 175 186 645 133 6,4 EBITDA margin (EBITDA / total revenue) % 7,7 9,4 10,6 10,1 9,5 8,2 0,5p EBITDA AL 92 127 144 156 519 100 8,7 EBITDA AL margin (EBITDA AL / total revenues) % 5,6 7,6 8,7 8,5 7,6 6,1 0,5p Depreciation, amortization and impairment losses (128) (127) (125) (123) (504) (121) 5,5 Profit (loss) from operations = EBIT (3) 31 50 62 140 13 n.a. EBIT MARGIN % (0,2) 1,9 3,0 3,4 2,1 0,8 1,0p CASH CAPEX (before spectrum investment) 93 73 66 151 384 35 (62,4) ORDER ENTRY 1.609 1.886 1.637 2.198 7.329 1.393 (13,4)

FINANCIALS (AS REPORTED) Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 1.630 1.673 1.657 1.845 6.805 1.628 (0,1) NET REVENUE 1.278 1.321 1.299 1.482 5.380 1.290 0,9 EBITDA 79 29 115 91 314 84 6,3 EBITDA margin (EBITDA / total revenue) % 4,8 1,7 6,9 4,9 4,6 5,2 0,4p Depreciation, amortization and impairment losses (128) (155) (125) (123) (532) (121) 5,5 Profit (loss) from operations = EBIT (49) (126) (10) (33) (218) (36) 26,5 CASH CAPEX 93 73 66 151 384 35 (62,4)

DT IR BackUp Q1/20 63 / 73 X SYSTEMS SOLUTIONS EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % Profit (loss) from operations = EBIT (49) (126) (10) (33) (218) (36) 26,5 - Depreciation, amortization and impairment losses (128) (155) (125) (123) (532) (121) 5,5 = EBITDA 79 29 115 91 314 84 6,3 - Special factors affecting EBITDA (46) (130) (60) (95) (331) (49) (6,5) = EBITDA (ADJUSTED FOR SPECIAL FACTORS) 125 158 175 186 645 133 6,4 = EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) 92 127 144 156 519 100 8,7

SPECIAL FACTORS Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions1637 of € millions1637 of € millions5132 of € millions of1637 € % EFFECTS ON EBITDA (46) (130) (60) (95) (331) (49) (6,5) - of which personnel (34) (40) (28) (68) (169) (41) (20,6) - of which other (12) (90) (32) (27) (162) (7) 41,7 EFFECTS ON PROFIT (LOSS) FROM OPERATIONS = EBIT (46) (157) (60) (95) (358) (49) (6,5) - of which personnel (34) (40) (28) (68) (169) (41) (20,6) - of which other (12) (118) (32) (27) (189) (7) 41,7

DT IR BackUp Q1/20 64 / 73 X CONTENT DT

DT IR BackUp Q1/20 65 / 73 X GROUP DEVELOPMENT FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 682 683 704 729 2.797 708 3,8 Netherlands 461 458 479 513 1.910 476 3,3 GD Towers 236 239 239 231 945 247 4,7 Other (15) (14) (14) (15) (58) (15) 0,0 EBITDA 332 319 345 335 1.330 340 2,4 Netherlands 147 137 153 154 591 157 6,8 GD Towers 191 188 197 194 771 195 2,1 Other (6) (6) (5) (13) (32) (12) (100,0) EBITDA AL 255 250 269 259 1.033 269 5,5 Netherlands 123 117 132 130 502 136 10,6 GD Towers 138 140 142 143 563 145 5,1 Other (6) (7) (5) (14) (32) (12) (100,0) EBITDA margin (EBITDA / total revenue) % 48,7 46,7 49,0 46,0 47,6 48,0 (0,7p) EBITDA AL margin (EBITDA AL / total revenues) % 37,4 36,6 38,2 35,5 36,9 38,0 0,6p Depreciation, amortization and impairment losses (200) (199) (208) (205) (812) (194) 3,0 Profit (loss) from operations = EBIT 132 120 137 130 519 146 10,6 CASH CAPEX (before spectrum investment) 86 106 99 161 452 119 38,4

FINANCIALS (AS REPORTED) Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 682 683 704 729 2.797 708 3,8 NET REVENUE 522 520 540 576 2.158 539 3,3 EBITDA 325 300 479 322 1.427 333 2,5 EBITDA margin (EBITDA / total revenue) % 47,7 43,9 68,0 44,2 51,0 47,0 (0,7p) Depreciation, amortization and impairment losses (200) (199) (208) (205) (812) (194) 3,0 Profit (loss) from operations = EBIT 126 102 270 118 615 139 10,3 CASH CAPEX 86 106 99 161 452 119 38,4

DT IR BackUp Q1/20 66 / 73 X GROUP DEVELOPMENT EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % Profit (loss) from operations = EBIT 126 102 270 118 615 139 10,3 - Depreciation, amortization and impairment losses (200) (199) (208) (205) (812) (194) 3,0 = EBITDA 325 300 479 322 1.427 333 2,5 - Special factors affecting EBITDA (6) (18) 134 (12) 97 (7) (16,7) = EBITDA (ADJUSTED FOR SPECIAL FACTORS) 332 319 345 335 1.330 340 2,4 = EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) 255 250 269 259 1.033 269 5,5

SPECIAL FACTORS Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECTS ON EBITDA (6) (18) 134 (12) 97 (7) (16,7) - of which personnel (3) (11) (2) (2) (19) (2) 33,3 - of which other (3) (7) 136 (10) 115 (5) (66,7) EFFECTS ON PROFIT (LOSS) FROM OPERATIONS = EBIT (6) (18) 134 (12) 97 (7) (16,7) - of which personnel (3) (11) (2) (2) (19) (2) 33,3 - of which other (3) (7) 136 (10) 115 (5) (66,7)

DT IR BackUp Q1/20 67 / 73 NETHERLANDS FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 461 458 479 513 1.910 476 3,3 PRODUCT VIEW 461 458 479 513 1.910 476 3,3 - Fixed network 90 90 90 90 361 95 5,6 - Mobile communications 371 368 390 422 1.550 381 2,7 SEGMENT VIEW 461 458 479 513 1.910 476 3,3 - of which Consumer 1 342 339 353 384 1.418 355 3,8 - of which Business 1 100 95 97 100 392 98 (2,0) EBITDA 147 137 153 154 591 157 6,8 EBITDA MARGIN (EBITDA / TOTAL REVENUE) % 31,9 29,9 31,9 30,0 30,9 33,0 1,1p EBITDA AL 123 117 132 130 502 136 10,6 EBITDA AL MARGIN (EBITDA AL/ TOTAL REVENUE) % 26,7 25,5 27,6 25,3 26,3 28,6 1,9p CASH CAPEX (AS REPORTED) 63 62 58 111 294 73 15,9

1 As part of the full process integration of Tele2 as of January 1, 2020, segment total revenue disclosures have been restated to improve year-over-year comparison Figures of previous periods were adjusted.

DT IR BackUp Q1/20 68 / 73 X Netherlands OPERATIONALS

Q1 Q2 Q3 Q4 FY Q1 Change Note 2019 2019 2019 2019 2019 2020 % FIXED NETWORK (END OF PERIOD) Fixed network Access Lines ('000) 557 578 601 619 619 632 13,5 Broadband Customers ('000) 1 540 562 586 605 605 616 14,1 MOBILE COMMUNICATIONS (END OF PERIOD) Service revenue (€ million) 254 262 277 273 1.066 268 5,5 CUSTOMERS ('000) 5.382 5.455 5.528 5.610 5.610 5.686 5,6 - contract ('000) 4.949 5.026 5.106 5.189 5.189 5.256 6,2 - prepaid ('000) 432 429 422 421 421 430 (0,5) NET ADDS ('000) 51 73 73 82 279 76 49,0 - contract ('000) 71 77 80 83 311 67 (5,6) - prepaid ('000) (20) (4) (7) (1) (32) 9 n.a. AVERAGE MONTHLY CHURN (%) 1,1 1,0 1,1 1,1 1,1 1,0 (0,1p) - contract (%) 1,0 0,9 0,9 0,9 0,9 0,9 (0,1p) ARPU € 16 16 16 16 16 15 (6,3) - contract € 17 17 17 17 17 16 (5,9) - prepaid € 3 3 3 3 3 3 0,0

1 As of January 1, 2020, harmonization of the definition for broadband customers. Figures of previous periods were adjusted.

DT IR BackUp Q1/20 69 / 73 X CONTENT DT

DT IR BackUp Q1/20 70 / 73 GROUP HEADQUARTERS & GROUP SERVICES FINANCIALS (ADJUSTED FOR SPECIAL FACTORS)

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 651 678 633 658 2.620 632 (2,9) NET REVENUE 48 48 49 50 195 49 2,1 EBITDA (35) 20 (45) (190) (250) (12) 65,7 EBITDA margin (EBITDA / total revenue) % (5,4) 2,9 (7,1) (28,9) (9,5) (1,9) 3,5p EBITDA AL (137) (82) (143) (289) (651) (104) 24,1 EBITDA AL margin (EBITDA AL / total revenue) % (21,0) (12,1) (22,6) (43,9) (24,8) (16,5) 4,5p Depreciation, amortization and impairment losses (260) (307) (289) (302) (1.159) (300) (15,4) Profit (loss) from operations = EBIT (296) (287) (334) (492) (1.409) (313) (5,7) CASH CAPEX (before spectrum investment) 274 231 234 288 1.028 233 (15,0)

FINANCIALS (AS REPORTED) Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % TOTAL REVENUE 651 678 633 658 2.620 632 (2,9) NET REVENUE 48 48 49 50 195 49 2,1 EBITDA (132) (7) (67) (283) (489) (71) 46,2 EBITDA margin (EBITDA / total revenue) % (20,3) (1,0) (10,6) (43,0) (18,7) (11,2) 9,1p Depreciation, amortization and impairment losses (260) (307) (289) (302) (1.159) (300) (15,4) Profit (loss) from operations = EBIT (393) (314) (357) (585) (1.648) (371) 5,6 CASH CAPEX 274 231 234 288 1.028 233 (15,0)

DT IR BackUp Q1/20 71 / 73 X GROUP HEADQUARTERS & GROUP SERVICES EBITDA RECONCILIATION

Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % Profit (loss) from operations = EBIT (393) (314) (357) (585) (1.648) (371) 5,6 - Depreciation, amortization and impairment losses (260) (307) (289) (302) (1.159) (300) (15,4) = EBITDA (132) (7) (67) (283) (489) (71) 46,2 - Special factors affecting EBITDA (97) (27) (23) (92) (239) (58) 40,2 = EBITDA (ADJUSTED FOR SPECIAL FACTORS) (35) 20 (45) (190) (250) (12) 65,7 = EBITDA AL (ADJUSTED FOR SPECIAL FACTORS) (137) (82) (143) (289) (651) (104) 24,1

SPECIAL FACTORS Q1 Q2 Q3 Q4 FY Q1 Change 2019 2019 2019 2019 2019 2020 Note millions of € millions of € millions of € millions of € millions of € millions of € % EFFECTS ON EBITDA (97) (27) (23) (92) (239) (58) 40,2 - of which personnel (72) (67) (28) (30) (197) (57) 20,8 - of which other (25) 41 5 (63) (42) (2) 92,0 EFFECTS ON PROFIT (LOSS) FROM OPERATIONS = EBIT (97) (27) (23) (92) (239) (58) 40,2 - of which personnel (72) (67) (28) (30) (197) (57) 20,8 - of which other (25) 41 5 (63) (42) (2) 92,0

DT IR BackUp Q1/20 72 / 73 X DT GROUP GLOSSARY AND DISCLAIMER

In addition to financial information presented in accordance with IFRS, this presentation contains non-GAAP financial measures, such as ... which is defined as ... EBIT Abbreviation for EARNINGS BEFORE INTEREST AND TAXES. EBIT is equivalent to the P&L-line "Profit from operations". Adj. EBIT EBIT adjusted for special factors. EBT Abbreviation for EARNINGS BEFORE TAXES. EBT is equivalent to the P&L-line "Profit before income taxes". Adj. EBT EBT adjusted for special factors. Abbreviation for EARNINGS BEFORE INTEREST, TAXES, DEPRECIATION AND AMORTIZATION. EBITDA is equivalent to EBIT before Depreciation and Amortization. EBITDA Depreciation and Amortization is not a line in the P&L but provided in the notes as "Other disclosures". Adj. EBITDA EBITDA adjusted for special factors. EBITDA AL Abbreviation for EARNINGS BEFORE INTEREST, TAX, DEPRECIATION AND AMORTIZATION after leases. Net profit/loss adjusted for special factors. Special factors Special factors impair the comparability of the results with previous periods. Details on the special factors are given for the group and each operating segment. Cash capex Cash outflows for investments in intangible assets (excluding goodwill) and property, plant and equipment.

Free cash flow Net cash from operating activities minus net cash outflows for investments in intangible assets (excluding goodwill) and property, plant and equipment.

Free cash flow AL Net cash from operating activities minus net cash outflows for investments in intangible assets (excluding goodwill) and property, plant and equipment after leasses.

Gross debt includes not only bonds and liabilities to banks, but also liabilities to non-banks from promissory notes, lease liabilities, liabilities arising from ABS transactions Gross debt (capital market liabilities), liabilities from derivatives and cash collateral. Net debt is calculated by deducting cash and cash equivalents as well as financial assets classified as held for trading and available for sale (due ≤ 1 year). In addition, Net debt receivables from derivatives and other financial assets are deducted from gross debt. Net debt w/o Leases Net debt without leases n.a. not applicable

Abbreviation for AVERAGE REVENUE PER USER. Calculation: Service fee, as well as voice, non voice, roaming and visitor revenues, divided by the average number of ARPU customers in the period. Visitor revenues are allocated exclusively to contract customers.

The figures in this presentation are unaudited. These and the other non-GAAP financial measures used by Deutsche Telekom are derived from our IFRS financial information but do not comply with IFRS and should not be viewed as a substitute for our IFRS figures. DT IR BackUp Q1/20 73 / 73